Roland Earnst Archives - Page 8 of 46

February 22, 2023February 21, 2023

Sleep as a Great Time Waster

As a teenager, it was frustrating that I was supposed to spend a third of my time asleep. I thought of sleep as a great time waster when there were so many things I wanted to do. I thought I could accomplish much more by staying awake.

The truth is that humans need sleep, and so do all animals. Birds, fish, and even insects need periods of dormancy to survive. Even plants need “sleep.” Sunlight empowers photosynthesis in plants to produce the nutrients they need for survival and growth. Therefore, it seems that plants should grow faster if they had sunlight 24 hours a day. Not so. If you set up an indoor garden with artificial lights, you will find that the plants need dark periods. You can even change the “seasons” for the plants by varying the percentage of darkness and light.

Instead of seeing sleep as a great time waster, we know that it is a vital biological process essential for the survival and well-being of living things. Sleep is necessary to maintain good health by restoring and repairing the body’s tissues and organs. During sleep, the body produces hormones that help repair damaged tissues and build new ones. Sleep plays a critical role in the immune system, as it helps the body produce cytokines, a type of protein required to fight infection and inflammation.

Sleep is also crucial for the regulation of metabolic processes. Working with our circadian rhythm, sleep helps to regulate appetite and energy balance. Sleep deprivation can lead to increased hunger and decreased production of hormones that regulate appetite, such as leptin and ghrelin. This can lead to weight gain and obesity, increasing the risk of developing several chronic health conditions.

Sleep is essential for more than just physical well-being. During sleep, our brain processes and consolidates memories and data acquired during awake times. The lack of sleep can impair attention, memory, decision-making, and emotions. Sleep aids in the consolidation of learning and the formation of new memories. During sleep, the brain replays and consolidates memories from the previous day, helping to strengthen and make them more resistant to forgetting.

Now that I am old, I appreciate sleep much more than I did as a teenager. I no longer see sleep as a great time waster but as a blessing from God. I have found that some of my best ideas come to me at night. I can wake up with a new idea or a fresh way of looking at things. Sleep has cleared away the fog in my mind so I can see things I had overlooked.

I am also thankful that God doesn’t sleep. We can sleep because He is our protector 24/7/365. Psalms 121:3b-4 says, “He who keeps you will not slumber. Behold, He who keeps Israel shall neither slumber nor sleep.” So when our melatonin level increases and our circadian clock tells us it’s time to sleep, we can rest knowing that God is still at work keeping the world going. “The Lord’s love never ends; his mercies never stop. They are new every morning” (Lamentations 3:22-23 NCV).

February 21, 2023February 20, 2023

When Obeying God Doesn’t Make Sense

God’s first command to Adam and Eve did not seem to make sense. God created many beautiful trees, but one of them was different. God told the first couple they could eat the fruit from any of the trees, with only one exception. They must have thought that obeying God doesn’t make sense. Why should one tree be off-limits?

Sometimes we must tell our children to avoid doing something that doesn’t make sense to them. To a small child, we say, “Stay out of the street.” They look at that open space where they could run or ride a tricycle. It seems like a fun place to venture into. Genesis 3:6 says that Eve saw the forbidden tree was “good for food” and “pleasant to the eyes.” How could it be possible that God was right when He said that eating from that tree would lead to death (Genesis 2:17)?

Eve knew what God had told Adam about the tree. In Genesis 3:2, she goes even further when she says that even touching it would lead to death. Was she embellishing what God had said, or had she received further warnings? Did she know that if she touched it, she would want to eat it, just like the child who is near the street wants to step into it? Like that child, did the woman even understand what death is?

God couldn’t explain to Adam and Eve why He put that tree in the garden any more than the road builders could explain to the young child why they put the street in front of his house. The “why” didn’t really matter. The point is that just as the parent who tells a child to stay out of the street is wiser than the child, so God was wiser than the newly-created couple. Just as the child must learn to obey, so did Adam and Eve.

Learning to obey wise warnings is more important than knowing the reason. When we demand an explanation, we are saying that we are our own masters and will decide what we will do. Doing what God commands even when obeying God doesn’t make sense means that we believe He knows more than we do. It means we trust God, even though our desires and our culture tell us to take a different action. We must overcome our feelings and pride to obey, even when we want to run out into that street.

Jesus said, “If you love me, you will keep my commandments (John 14:15). When Jesus says to love your enemies, turn the other cheek, go the extra mile, and pray for your persecutors, we think, “Obeying God doesn’t make sense.” (See Matthew 5:38-48.) Like the child running into the street or Eve reaching for the forbidden fruit, we want to rebel and trust our own understanding. But we need to remember the words of Jesus in John 15:10-11, “If you keep My commandments, you will abide in My love, just as I have kept My Father’s commandments and abide in His love. These things I have spoken to you, that My joy may remain in you, and that your joy may be full.”

February 18, 2023February 15, 2023

The Universe Has a Purpose

“In a certain sense, you might say that the universe has a purpose, but I’m not sure what the purpose is. I don’t believe in any religion I’ve seen. So in that sense, I am an atheist.” – Roger Penrose

That statement by the British mathematician, mathematical physicist, philosopher of science, and Nobel Laureate in physics Roger Penrose appeared in an interview in New Scientist magazine. Penrose has won many awards and honors for his brilliant achievements. One of his endeavors has been to explore the origin of consciousness. He believes that the known laws of physics cannot explain the phenomenon of consciousness. The first of his three books on the subject was The Emperor’s New Mind (1989). Since then, he has worked with an anesthesiologist to develop a view of consciousness that he calls “orchestrated objective reduction” (Orch OR).

In the New Scientist interview, Penrose said, “whatever consciousness is, it must be beyond computable physics.” Penrose doesn’t think that consciousness is accidental. He said, “I think the presence of consciousness, if I can put it like that, is not an accident.”

If consciousness is not an accident, then it must be intentional. How can something be intentional without a mind that intends for it to be? How can it have a purpose without a purpose giver? Penrose stated in the interview that “nobody knows where the fundamental constants of nature come from.” He suggests that if those fundamental constants didn’t have the specific values they have, then the chemistry of life could not exist, and we wouldn’t be here. If those constants have the precise values for life, how could that happen without a conscious Designer?

Roger Penrose is a man whom God has gifted with a brilliant mind that, even at age 91, is still pursuing an understanding of the universe and consciousness. He clearly states that he does not believe the universe and consciousness are accidents, but he is seeking to explain them by quantum mechanics. However, he admits, “I would say that there is something going on that might resonate with a religious perspective.”

We agree with Penrose that the universe has a purpose. Purpose in the universe and purpose in consciousness can best be explained by a conscious Mind outside of the universe and beyond the reach of scientific analysis. This is not a “god-of-the-gaps” concept but logically seeking the best explanation. Following through with that understanding means that you, like everyone else, also have a purpose.

Reference: New Scientist magazine November 14, 2022

February 17, 2023February 17, 2023

The Most Mysterious Number in Physics

Many physical constants determine the structure of the universe. All of them have units or dimensions, such as the speed of light (c) or the gravity constant (G). That is, all of them except one. That one is the fine-structure constant represented by the Greek letter alpha (α). The fine-structure constant seems to be a random number with no units or dimensions, but it keeps showing up in physics calculations. It has been described as the most mysterious number in physics. American theoretical physicist Richard Feynman called it “a magic number that comes to us with no understanding by humans.”

Recognition of the fine-structure constant originated with German theoretical physicist Arnold Sommerfeld in 1916. Chemists can identify different elements in the lab by the spectral lines they emit or absorb when their electrons change energy levels. Astronomers analyze the spectral lines of stars to determine what elements they contain. Some spectral lines are split, showing a fine structure. To explain this, Sommerfeld introduced a new constant into his equations and called it the fine-structure constant. It has no units like the speed of light or other constants. It is just a number – a ratio.

The fine-structure constant shows the strength of the interaction between electrons and photons. It also shows up in many other ratios in physics. The value is approximately 0.007,297,352,569 or 1/137. Physicists consider it mysterious because they don’t know where it came from or why it has that value. They can’t explain why it exists at all. But if you are not a physicist, why should you care about the most mysterious number in physics?

If the fine-structure constant had any other value, life as we know it would not be possible. If you changed that number, you would change the universe. A different value for the fine-structure constant would change the size of atoms and alter chemistry and nuclear reactions. No stable matter, no life, and no intelligent beings would exist. We wouldn’t be here.

Richard Feynman wrote that “all good theoretical physicists put this number up on their wall and worry about it.” Apparently, they worry about where it came from and why it is what it is. Feynman further wrote, “You might say the ‘hand of God’ wrote that number, and ‘we don’t know how He pushed His pencil.”

Feynman was joking about the most mysterious number in physics, but we think it was written by the “hand of God.” We also believe “He pushed His pencil” so that He could create humans for a purpose. More on that tomorrow.

February 16, 2023February 14, 2023

The War Between Science and Theology

Yesterday we talked about how Eratosthenes accurately computed Earth’s circumference around 240 B.C. We also said that it is a myth that people in the middle ages and even in the time of Christopher Columbus believed that the world was flat. That myth was based on a fiction story about Columbus written by Washington Irving in 1828. The myth was reinforced by a scientist and a historian who initiated a war between science and theology.

Scientist and philosopher John William Draper wrote History of the Conflict Between Religion and Science in 1874. He claimed that the Church was hostile to the advancement of science. He claimed that the early Church fathers believed that scripture said the Earth is flat. That concept of a war between science and theology was further advanced and popularized by historian Andrew Dickson White in his book The Warfare of Science (1876). Darwin had published his work On the Origin of Species in 1859, and the war was on.

Creating a war between science and faith seems to have been a goal of Draper and White and many advocates of Darwin’s theory, such as Thomas Henry Huxley. The lack of scholarship on the part of Draper and White has been demonstrated. Meanwhile, Darwin’s theory has had to be revised to what is now known as Neo-Darwinism. Darwin thought that living cells were just globs of protoplasm. He had no idea that they are more like cities with factories, machines, and transportation systems operating on complex information contained in DNA. As biological science advances, Darwinian naturalism faces more challenges.

Historians of science David Lindberg and Ronald Numbers wrote in Beyond War and Peace: A Reappraisal of the Encounter between Christianity and Science (1986) that “there was scarcely a Christian scholar of the Middle Ages who did not acknowledge [Earth’s] sphericity and even know its approximate circumference.” What many writers, including Draper and White, had overlooked was that the leading early scientists were believers in God. In fact, their faith motivated their desire to know God through His creation.

We can still know God through His creation today. So the idea of a war between science and theology is not accurate. Science and faith are friends. “For his invisible attributes, that is, his eternal power and divine nature, have been clearly seen since the creation of the world being understood through what he has made” (Romans 1:20 CSB).

February 15, 2023February 14, 2023

To Accurately Calculate Earth’s Circumference

How was a man living over 2,000 years ago able to accurately calculate Earth’s circumference? How could he even know that Earth is spherical? How can some people today believe that our planet is flat when everyone has seen pictures of Earth taken by satellites in space?

Those may be too many questions at once. Let’s try looking at them one at a time. The first man to accurately calculate Earth’s circumference in about 240 B.C. was a Greek polymath named Eratosthenes. He was a brilliant mathematician, geographer, astronomer, music theorist, and poet, and his calculations were amazingly accurate.

A myth originated from a fiction work by nineteenth-century American author Washington Irving and other authors. Irving wrote a less-than-accurate “biography” of Christopher Columbus. In it, the Spanish authorities questioned Columbus’ plan to sail west to Asia by going east because they thought the ships would drop off the edge of a flat Earth. The truth is that European scholars at that time knew that our planet is a sphere. In fact, Columbus did too, but he believed that it was 25% smaller than it actually is. He should have paid more attention to Eratosthenes.

Ancient Greek scholars, as early as the fifth century B.C., recognized the spherical nature of the planet based on observations. (We have talked about that before.) So Eratosthenes set out to accurately calculate Earth’s circumference. Let’s look at a simplified description of how he did it.

Eratosthenes was the librarian of the famous library of Alexandria in Egypt. Syrene was a city 5,000 stadia south in what is now Aswan, Egypt. (5000 stadia was approximately 800 km or 497 miles.) At noon on the summer solstice, Eratosthenes placed a rod vertically into the ground in Alexandria. At the same time, his assistant had placed a rod of the same length at Syrene. Since Syrene is very close to the Tropic of Cancer, where the Sun is directly overhead at noon on the solstice, the rod did not leave a shadow. In Alexandria, the rod produced a shadow of 7 degrees, which is 1/50 of the circumference of a circle. That means Earth’s circumference would be 50 times the distance from Alexandria to Syrene. Multiplying 50 times 5,000 stadia results in 250,000 stadia for Earth’s circumference. Depending on exactly how long a stadion was, that measurement is accurate to within -2.4% to +0.8%.

That answers the first two questions, but what about people today who believe the Earth is flat when there is plenty of evidence otherwise? That is an example of people believing what they want to believe and refusing to accept the evidence. There is a connection here to the so-called war between science and faith, and it relates to what we read in Romans 1:20. More on that tomorrow.

February 14, 2023February 13, 2023

Elephants and Ecosystems

Yesterday we talked about ecosystems, what they are, and why they are essential. If you looked at yesterday’s picture, you saw that carbon sequestration was among the “services” provided by ecosystems. Today, there is much concern about atmospheric carbon (carbon dioxide and methane) increasing the “greenhouse effect” and causing global warming. That makes capturing carbon an essential service of ecosystems to protect our survival. One vital area involves African elephants and ecosystems.

Elephants are known as megaherbivores because of their size and the fact that they eat plants. New research has shown that elephants have a “profound” effect on forest ecosystems. We have mentioned before that beavers shape their environment to create ecosystems that support many other life forms. Researchers from Sweden, France, and the United States confirm that elephants are also “ecosystem engineers” that “significantly influence the structure and functioning of ecosystems” such as tropical rainforests in Africa.

The positive connection between elephants and ecosystems involves two aspects of elephant behavior. First, African forest elephants prefer to eat the leaves of trees with low wood density. This is because those leaves contain more protein and less fiber than the ones with high wood density. Secondly, elephants prefer to eat fruit from trees with higher wood density. By eating those fruits, the elephants disperse the seeds of the trees that sequester the most carbon.

Elephants spread more seeds of more plant species than any other animal. The elephant’s diet enables the survival and spread of the trees that store more carbon, keeping it out of the atmosphere. At the same time, elephants reduce overcrowding by the lower-density plants, allowing the larger trees to grow. This balance of elephants and ecosystems helps to protect the planet from excess carbon in the atmosphere.

The study concludes that elephant conservation will significantly affect global climate by controlling the amount of atmospheric carbon. God has designed a worldwide system of many ecosystems that make Earth suitable for advanced life to thrive. Our job is to protect the blessings God has given us to enjoy. Who doesn’t enjoy watching elephants?

Reference: Proceedings of the National Academy of Sciences

February 13, 2023February 13, 2023

Ecosystem Design and Stewardship

An ecosystem is a complex network of living and non-living things interacting with one another in a specific environment. It includes all the living organisms, such as plants, animals, and microorganisms, as well as the non-living components, such as air, water, soil, and climate. These living components are adapted to the non-living components in an interdependent system, with each relying on the others. We see ecosystem design everywhere we look on planet Earth.

Ecosystems exist in water environments, from ponds to streams to rivers to the oceans. They exist on land in forests, mountains, and deserts. They vary from tropical rainforests to frozen tundra. Each ecosystem has a unique balance of species, with each species playing a specific role. This balance is maintained through various mechanisms, including competition, predation, and mutualism.

Ecosystem design provides many vital services affecting human life, such as water filtration, air purification, and food. At the same time, humans have a profound impact on ecosystem management through deforestation, destruction, and pollution. Careless actions of humans can disrupt the delicate balance of ecosystems, leading to a decline in biodiversity, the extinction of essential species, and climate change.

Conservation and management efforts aim to protect and restore ecosystems and maintain their resilience. This involves protecting habitats, reducing pollution, and managing human activities to minimize ecosystem harm. It also requires monitoring and understanding environmental change and taking steps to reduce or correct human-caused impacts. As we protect ecosystems, they provide services critical to life on this planet. That is part of ecosystem design.

An ecosystem is an ecological system. As we think about the multitude of ecosystems, large and small, localized and widespread, we must realize that they are systems. Do systems happen by accident, or do they require intelligent planning? Can complex things come together to form an efficiently-functioning ecosystem on their own? Every living thing consists of many complex systems within the cells, organs, and whole bodies. Ecosystem design involves systems within systems within systems working together in balance.

Can efficient, balanced systems happen without a system designer? If there is a Designer of Earth’s ecosystems, as I believe there is, we owe it to Him to take care of what He has given for our existence and enjoyment. Genesis tells us that God gave humans the job of managing the creatures and ecosystems of planet Earth. (See Genesis 1:28.) We must avoid the rebuke the rich man gave to his unworthy steward in a parable Jesus told. “What is this I hear about you? Give an account of your stewardship, because you can no longer be my steward” (Luke 16:2).

February 8, 2023February 7, 2023

Bugs and Cars Colliding

When I go on a summer road trip, I always return with hundreds of insects smashed on the front of my car. Those bug remains are a real challenge to remove. So why don’t those little critters have enough brains to get out of the way? Bugs and cars colliding is a great summertime nuisance.

Okay, I know those insects that lost their lives playing a game of chicken with my vehicle don’t have very big brains – if they have any at all. I also realize that my car is much bigger than they are and probably traveling at a faster speed, so it’s hard for them to get out of the way. I also realize that the consequences of our brief encounter are much more tragic for them than it is for me. But I have never seen two bugs crashing into each other in mid-air. They can swarm in great numbers and never crash and fall from the sky. They must have some kind of collision avoidance system.

God gave insects the ability to avoid collisions with each other long before cars entered the scene. That fact led scientists at Penn State University to do some research on bugs and cars colliding. They probably can’t do much to give bugs the ability to avoid cars, but they wanted to give cars the ability to avoid hitting each other. Since bugs somehow avoid mid-air collisions with such skill, can their technology be applied to cars?

Even though only a fourth of driving occurs in the dark, half of all traffic fatalities happen at night. (It’s also when many insect species are most active, but that’s beside the point.) Present vehicle technologies for avoiding collisions use Light Detection and Ranging (LiDAR) or image sensors running sophisticated software. The systems are expensive and use lots of energy. The researchers wrote, “…task-specific obstacle avoidance algorithms allow insects to reap substantial benefits in terms of size and energy.” They wanted to learn how the bugs do it with tiny brains and micro-energy.

We have often talked about how scientists studying God’s creatures and creation have discovered ways to accomplish tasks more effectively and efficiently. For example, this new research shows ways to avoid vehicle collisions in a simpler, less expensive, and more energy-efficient way using a new algorithm based on the neural circuits of bugs.

God told Job, “If you want to learn, then go and ask the wild animals and the birds, the flowers and the fish. Any of them can tell you what the Lord has done” (Job 12:7-9 CEV). This research may not solve the problem of bugs and cars colliding, but it can help to solve the much more dangerous problem of cars colliding with other cars. Of course, you will still have to keep the scrub brush and bucket of cleanser handy.

References: acs.org and popsci.com

February 7, 2023February 6, 2023

Venomous or Poisonous – What’s the Difference?

People often think of venom or poison as the same thing, but they are not. Even though people may use those terms interchangeably, there are differences in their origin, delivery system, and effects on the body. So, when is it correct to say that something is venomous or poisonous?

Venom is a toxin produced by animals, usually in specialized glands. It’s delivered to the victim through a bite or a sting. Animals use venom to capture prey and for defense from predators – and sometimes humans. For example, snakes, spiders, scorpions, and some species of fish, frogs, and insects produce venom. Venomous animals have specialized structures, such as fangs or stingers to deliver the venom into the victim’s body. The effects vary from mild pain and swelling to severe muscle paralysis and even death.

In contrast to venom, poison is a toxic chemical produced by plants, animals, fungi, microorganisms, or humans in a chemical lab. Poison is usually ingested, inhaled, or absorbed through the skin. For example, many plants produce poisons to protect themselves from herbivores and other potential threats. Poisonous mushrooms, toxic berries, and certain types of flowers are examples of plants that produce poisons.

The effects of poison can depend on the type and amount consumed. Some common effects include nausea, vomiting, dizziness, and even death. Many everyday household items are poisonous and must be secured so children or animals can’t ingest them. Medicines that promote healing or fight disease are often poisonous if taken in the wrong quantities or in the wrong way.

So, if someone talks about a poisonous snake or scorpion, they are using the wrong term. Those animals are venomous. Poison does its damage when ingested, inhaled, or touched. For example, a poison dart frog is poisonous, but wasps, spiders, and snakes can be venomous. Some animals or insects are poisonous if eaten but venomous if they bite or sting. Monarch butterflies are mildly poisonous to potential predators, but box jellyfish are highly venomous and deadly to humans. If in doubt, the word “toxic” covers both, but it’s not as precise.

When saying that an animal is venomous or poisonous, remember this. A poisonous animal, such as a poison dart frog, is always poisonous and does not choose to be. A venomous animal, such as a snake, must choose to administer the venom. Humans can choose to avoid poison, but often they do not. People can take poison by mouth or inject it into themselves or someone else. We call that foolishness or murder. Alcohol is a poison that people consume as a drink, sometimes resulting in death. Self-inflicted poisoning by illegal drugs such as fentanyl is causing many deaths in the United States.

Some people ask, “Why would a good God create venomous or poisonous animals?” There is a good reason because those toxins serve as a defense mechanism or a method to capture prey for food. The more troubling question is, “Why would intelligent humans choose to put poisons into their bodies?” When asking that question, remember that it all started with Adam and Eve. “And the Lord God commanded the man, saying, ‘Of every tree of the garden you may freely eat; but of the tree of the knowledge of good and evil you shall not eat, for in the day that you eat of it you shall surely die’” (Genesis 2:16-17). The good news is that God provided the cure for the poison of sin. “For the wages of sin is death, but the gift of God is eternal life through Jesus Christ our Lord” (Romans 6:23).