science Archives

May 22, 2024May 21, 2024

An Animal Using Photosynthesis

Animals use an enormous number of methods to get nourishment. Harsh environments often require unusual methods, and many times, the animal at the bottom of the food chain is unusual. An excellent example is the leaf slug or leaf sheep (Costasiella kuroshimae). This sea slug is an animal using photosynthesis to secure its nourishment by a method known as kleptoplasty.

Plants serve as the foundation of the food chain, harnessing sunlight through photosynthesis to produce energy. Many animals, such as herbivores, rely on plants to meet their energy needs. Even carnivores indirectly depend on plants, as they consume the herbivores. However, the leaf sheep, through a process called kleptoplasty, bypasses this reliance on plants and directly uses photosynthesis for its energy needs.

The leaf sheep, a sea slug measuring only five to ten millimeters long, was first discovered off the coast of Japan in 1993 and later found in the Philippines and Indonesia. Its common name derives from the two dark eyes and two rhinophores on the top of its head, making it resemble a tiny sheep. They feed on algae, which are plants that contain chloroplasts that enable photosynthesis. The leaf sheep retains the chloroplast cells within its body, enabling it to become an animal using photosynthesis. In this way, it bypasses the need to eat more algae for over two months. In the food chain, the leaf sheep become food for a variety of fish and other forms of sea life.

The more we learn about the natural world, the more we see unique systems that allow life to exist in symbiotic relationships that give evidence of design. Mindless chance does not provide the best explanation for examples such as leaf sheep. If there were just one such case, you might think it might be blind chance, but this is just one of a vast number of cases where a very specialized design allows life to exist. Everywhere we look, a “wonder-working hand” has gone before, and we would suggest that it’s the “hand” of God.

Reference: wikipedia.org

May 20, 2024May 19, 2024

Green Sea Turtles and Migration

They are sea turtles with a carapace that is olive to black. So, why are they called green sea turtles (Chelonia mydas)? These sea creatures live in tropical and subtropical areas of the Atlantic and Pacific. They eat seagrasses along the shore by biting off the tips rather than pulling them up by the roots. By doing that, they keep the seagrasses healthy, and the green vegetation makes their body fat turn green, which is where they got their name.

Green sea turtles migrate far from their feeding grounds to various remote islands where they lay their eggs. Many of them live along the coast of Brazil, and a large percentage of those lay their eggs on Ascension Island. Ascension is a small volcanic island 1400 miles (2250 kilometers) out in the Atlantic Ocean. Because the prevailing equatorial current runs from Ascension to Brazil’s coast, it takes the adult turtles 50 days to swim from Brazil to Ascension Island. They make the return trip in less than 30 days, swimming with the current.

We could ask, “What advantage does this migration have?” The answer is easy. Ascension Island has sandy beaches where the turtles can lay their eggs. There are few predators on the island, so the percentage of the eggs that hatch and survive is high. When the hatchlings are ready, they paddle out into the equatorial current and float back to Brazil.

There are more challenging questions we might ask. How do these turtles locate Ascension Island? What caused them to go there in the first place? Can we explain this migration by chance? Researchers have made suggestions, but the answers remain unclear. Maybe the best answer is that God has provided a way for these slow and harmless creatures to survive. They keep the seagrasses healthy in their home areas while serving a role in the fauna of the isolated volcanic desert island called Ascension. Green sea turtles are part of God’s amazing web of living things.

May 18, 2024May 20, 2024

We Look Up and See a Blue Sky

Most of us underestimate the design of planet Earth. We look up and see a blue sky and take it for granted, but having a blue sky is unique to our planet and tells us much about its design.

We must first understand that a change in electric charge produces light. The amount varies depending on the amount of change. Small changes produce light that is low in energy and may not be visible to human eyes. Radio waves are light we cannot see. Infrared waves are light humans can’t see, but numerous animals can. For example, a rattlesnake can see infrared light coming from a mouse even though human eyes would say there is no light. The mouse gives off infrared due to its biological processes, and the snake can see it in the dark. We call infrared light radiant heat.

A large change in an electric charge produces light that is too energetic for our eyes to see. Xrays, ultraviolet, and gamma rays are the words we use to describe these high-energy forms of light. They can expose a photographic plate and penetrate most organic tissue, possibly causing damage. The light our eyes are designed to see has lower energy than Xrays and higher than radio waves. This beautiful design of our eyes means we cannot see through most solid materials like wood, metal, or human flesh.

Light from the Sun arrives on Earth with all of these energies present. The Earth’s atmosphere is dense enough to prevent the high-energy forms of light from reaching the surface. That means we are not fried by the X-rays, gamma rays, or even excessive ultraviolet light coming from the Sun. The highest visible light that our eyes can see is blue. As blue light enters our atmosphere, it is scattered and refracted away by atmospheric materials. We look up and see a blue sky.

Green is the next highest energy reaching the surface. Plants are protected from damage because their chlorophyll reflects green light. When tree leaves lose their chlorophyll in autumn, the green disappears, replaced by other colors hidden within the leaf structure. Then, the leaves fall off to prepare the tree for winter. Annual plants shrivel and die while perennials retain their root structures to bring color back in the spring.

So we look up and see a blue sky. On the Moon, we would see a black sky. On Jupiter, it would be red. The atmosphere on all the other planets gives a color other than blue. Astronauts face huge dangers when leaving Earth’s atmosphere with its well-engineered light-handling design. To live on the Moon or Mars, human engineers must build elaborate designs to imitate what God created to allow us to live on Earth. That is the greatest challenge to space travel and a great demonstration of God’s wisdom.

Why Is the Sky Blue, Why Are the Trees Green? is a children’s book available from the Does God Exist? ministry. Contact jncdge@aol.com or purchase the complete set of 16 children’s books at powervine.store.

May 15, 2024May 14, 2024

Medicalized Child Abuse?

One of the most inflammatory issues of our day is the question of children who decide they want to change their gender. A team led by Dr. Hilary Cass, a renowned British pediatrician, recently produced a 388-page report based on four years of research into trans care in Britain. The UK’s Sunday Times reported that “Trans activists have bullied politicians and doctors into embracing ‘medicalized child abuse’ and cowed dissenters into silence.” That is a challenge to the same groups in America, but some public school counselors should be added to the group of abusers.

The number of British children referred for transgender drug and surgery treatments rose from 250, mostly boys, in 2012 to 5,000, mostly girls, in 2022. The concerns of medical experts like Dr. Cass are not because they are transphobic but because they are starting to see the consequences of medical sex-change procedures. The treatments for “gender dysphoria” have lifetime effects, including a loss of bone health and fertility, making the subjects lifelong patients for medical treatment.

The Times newspaper points out that the problem is likely more serious than anyone realizes because 6 out of 7 gender treatment centers refused to give data to researchers. Although this report is from Britain, we suspect the situation is worse in the United States. We have been personally involved in a case where a school counselor led a 14-year-old child to have puberty blockers and surgery. The cases we have had contact with involve children who needed psychological help in dealing with relationships.

Attempting to change God’s creation and design of the human reproductive system will cause children a great deal of pain and uncertainty. We suggest that medicalized child abuse is not the way to help disturbed children find their identity and live meaningful lives. We will see an increase in evidence for the destructive nature of medical gender-changing treatments for young people. God’s design works, but in today’s world, many reject God’s plan.

References: cass.independent-review and The Week for May 3, 2024, page 14.

May 14, 2024May 13, 2024

A Balanced System of Ocean Life

Kelp safeguards the ocean’s ecology by providing a home for many sea creatures, preventing coastal erosion, and sequestering vast amounts of carbon dioxide. The last century has seen a massive decrease in kelp growing along the California coast because of an increase in sea urchins that eat kelp. Sea otters feed on sea urchins, and as people killed sea otters for their fur, the urchin population increased, reducing the underwater kelp forests. It is easy to see that God has given us a balanced system of ocean life, but humans sometimes upset the balance.

Sea otters have a fast metabolism, requiring them to eat a fourth of their body weight daily, and sea urchins are their favorite food. Because of the fur trade, sea otters disappeared from Northern and Southern California, with a small population remaining in the central part of the state. In 1913, California made sea otters protected mammals, but 1977’s Endangered Species Act gave them more protection. Since then, central California has seen a 58% increase in kelp while kelp in the northern and southern coasts has declined. Research has shown that sea otters are the reason for the ecological improvement in Central California.

Any time humans disturb the balanced system of ocean life or any ecosystem, negative consequences result. The biological design of our planet does not just consist of separate independent organisms, but all of life on Earth is interconnected. An analogy might be the workings of an airplane. Multiple systems operate within an aircraft, including the landing gear, engines, electrical system, hydraulics, wings, rudder, etc. For it to fly, all of those systems must work together. Engineers must design a plan that integrates those systems. The aircraft doesn’t happen by accident but by the design of intelligent engineers.

All of life on Earth is interrelated and not a product of chance. There is design in all of life and in the planet itself that allows us to exist. In Proverbs 8, “Wisdom” encourages us to see God’s wise design on this planet. In verses 22-31, we see specific wisdom shown in various applications involved in preparing planet Earth for life. Verses 35-36, we see the alternative to understanding God’s use of wisdom in creating the world in which we live. Verse 35 tells us that those who find wisdom find life, and those who do not find wisdom harm themselves and prefer death. We all see all around us the interaction of living things and what happens when humans destroy one of them.

Let us learn from the balanced system of ocean life that includes kelp, sea otters, and urchins. Caring for all life is a challenge God has given us in Genesis 2:15. The need to do this is more clear today than ever before.

Reference: Smithsonian magazine and The Week of April 26, 2024, page 21.

May 13, 2024May 12, 2024

Biblical Wisdom on Anger

“Don’t let the sun go down on your anger.” That’s the advice Paul gives in Ephesians 4:26, and it’s good advice. Recent research offers new meaning to that biblical wisdom on anger. Paul goes on to write, “…and give no opportunity to the devil.” Jesus said concerning the devil, “He was a murderer from the beginning” (John 8:44). Anger is one more method the devil uses to murder us.

A team of researchers set out to “examine the acute effects of provoked anger…on endothelial cell health.” Endothelial cells line the interior of the body’s blood vessels and play an essential role in blood flow and blood pressure. Previous research had shown that in the hour before a heart attack, people were more than twice as likely to have experienced anger or emotional upset compared to the same time the previous day.

In this new research, the team recruited 280 healthy adults and put them through an eight-minute anger recall test. They monitored blood samples, blood pressure, and the capacity of blood vessels to dilate. That dilation ability is essential for heart health. Research links lower dilation to a higher chance of heart attacks.

After eight minutes of thinking and speaking about a recent experience that made them angry, the test subjects had reduced blood vessel dilation capacity for forty minutes. If eight minutes of recalling and describing an anger experience can result in forty minutes of reduced blood-vessel capacity, what might be the effect of ruminating on anger to the end of the day, overnight, or even longer? This research gives new reasons for releasing your anger before sunset.

Biblical wisdom on anger gives more evidence for the accuracy of God’s Word.

References: Microsoft News, and Journal of the American Heart Association

May 9, 2024May 7, 2024

Bar-tailed Godwit Migration

In October 2022, a small bird set a new world record for long-distance flying as it flew nonstop from its hatching ground in Alaska to its wintering ground in Tasmania. This bird did not land, eat, or drink for 250 hours (eleven days) as it flew at an average ground speed of 30 miles per hour, traveling from one end of the Earth to the other. The only human-made machine that can do that is a Boeing 777 with a 213-foot wingspan and powerful jet engines. The bird was a bar-tailed godwit.

Bar-tailed godwits, as scientists have discovered, are well-equipped for their long-distance journeys. They possess a high metabolic rate and a physiological tolerance for elevated cortisol levels. However, it is their feather design that truly enables them to undertake these arduous journeys. The feathers of a bar-tailed godwit provide insulation, keeping the bird warm even in cold air masses. They also repel rain, and their shape is conducive to long flight hours, aiding the bird’s forward propulsion.

In recent years, scientific research on feathers has shown that they are perfectly engineered for a wide variety of uses. The feathers of a penguin are different from those of a hummingbird. The reason should be obvious, as these two birds live in very different environments. Fossil remains have shown that many dinosaurs had feathers. They used them to catch insects, keep warm, facilitate swimming or feeding in water, and attract mates. Those of us who believe there is design and purpose in all living things are not surprised by these discoveries. A contractor building a house will use materials that work in all kinds of houses, modifying them to fit the particular building under construction. In the same way, God uses materials to meet the needs of His organisms in various ways we are only beginning to understand.

Skeptics have questioned why God would design organisms to travel such immense distances. Does He have something against bar-tailed godwits? In this case, these birds benefit two environments with minimal resources. Alaska doesn’t have large amounts of topsoil to supply the needs of its plants. Tasmania is an island state of Australia, located 150 miles south of the mainland. Like Alaska, Tasmania has limited natural resources, but the arrival of the bar-tailed godwit brings nutrients that allow life to flourish on this island. The design of feathers makes that possible.

God sustains isolated environments by having lifeforms travel between them or from nutrient-rich areas to areas lacking those nutrients. God sustains the Earth by migrations of everything from insects to sea life to birds to large mammals. Traveling between needy areas sustains those areas and the lifeforms that travel between them.

Reference: Scientific American for May 2024, pages 41-51

May 8, 2024May 6, 2024

Technology Can Negatively Affect Learning

As an educator, I’ve observed a concerning trend. People, particularly students, have become reliant on technology such as computers and smartphones for writing and communication. It’s not uncommon to see them struggle to think and compose thoughts without their electronic devices. This reliance on technology is evident even in our discussions about complex topics like God’s existence or the Bible’s inspiration. When asked about a basic fact, many respond by saying they have to check with Google, Alexa, or Siri. Educational psychologists are warning that this over-reliance on technology can negatively affect learning.

A Scientific American article by Charlotte Hu reports on studies dating back to 2014 showing technology’s negative effect on learning. Hu points out that research has shown that people can type notes with very little brain activity. Many years ago, I worked for David Segal, a leader in the use of learning tests. He once told me, “American education is moving material from a professor’s notes to a student’s test paper with as little interference as possible in between.” We have advanced that one step further by saying it moves from a professor’s laptop to a student’s with no absorption by the human brain in between.

Transcribing in longhand is slower than typing into an electronic device, requiring the writer to pay closer attention. One research study used a head covering with 256 electrodes to detect brain activity when students handwrote and typed words. When students wrote the words, there was widespread brain function, but when the same student typed the words, brain activity was minimal, showing that technology can negatively affect learning.

When I taught physics to high school kids, we would calculate what should happen in a physical situation. Then, the students designed and conducted experiments to test their predictions. I would work through a solution on the blackboard, doing the math in my head. As hand-held calculators became more advanced, students would plug numbers into a program in the calculator to get the same answer. Later, one of the students I had done this with in class was making change for me at a drive-in restaurant. I gave the student a dollar bill to pay for a 67-cent item, but the student couldn’t give me the correct change without using a calculator.

The human brain is designed to process information and record relevant data. Technology can negatively affect learning when an electronic device takes over some of that process, bypassing the brain. Children need to have their brains stimulated and relevant information stored in their heads, including memorizing Bible verses. Perhaps a factor in the loss of belief in God and the Bible today is that technology is taking over our thinking. Those who created the technology are not as capable as the One who created our brains.

Reference: “Hands-on” by Charlotte Hu in the May 2024 issue of Scientific American, page 134

May 7, 2024May 5, 2024

We Need Human Touch

What is the benefit of a hug or a handshake? Researchers in Germany and the Netherlands compiled data from 137 studies involving 13,000 people of all ages. Their research showed significant benefits to those who are regularly touched by others. In other words, we need human touch.

This is not a sexual issue, but touch provides physical and, to a greater extent, mental health benefits. The data shows that the benefits apply to newborns, older people, people with dementia, people struggling with stress, and people who have problems controlling their aggression. Women benefit more than men, and those who are sick or in pain benefit more than those who are healthy.

The New Testament encourages the followers of Jesus to engage in a social practice of that day that involved touching. In Luke 7:45, Jesus pointed out that the host, who was a Pharisee, had not given a warm greeting, but He said a woman in need “has not ceased to kiss my feet.” In Romans 16:16, Paul urges Christians to “greet one another with a sacred kiss.” That instruction is repeated in 1 Corinthians 16:20, 2 Corinthians 13:12, 1 Thessalonians 5:26, 1 Peter 5:14, Luke 15:20, and Acts 20:37. The hug we give one another in times of pain, loss, or separation has real value.

We need human touch, but the study showed that the regularity of touching is more important than the duration. Consensual hugs, kisses, or massages have many mental and physical health benefits. Babies do better when touched by their parents, and the positive effects are more noticeable in premature babies. Adults struggling with illness showed more significant mental health benefits from touch than healthy people in this study.

A hug is a major way of expressing affection and closeness to someone, but even a handshake does wonders for participants. Those who have been abused may not accept a hug well, but a handshake is free of cultural bias or sexual connotation. Our society has gotten so obsessed with sexual abuse and the perception of personal rights that we have thrown the baby out with the bath. We need human touch, and that is a need the Church can help to meet.

Reference: “A systematic review and multivariate meta-analysis of the physical and mental health benefits of touch interventions” in Nature Human Behaviour, April 8, 2024

May 6, 2024May 6, 2024

Is Consciousness an Illusion?

Is consciousness an illusion, or is it real? Philosopher Rene Descartes insisted that consciousness was the only undeniable fact of our existence. He is known for the phrase, “I think, therefore, I am” (cogito, ergo sum). Daniel Dennett was an analytic philosopher who, until his death on April 19, 2024, spent his career suggesting that consciousness is an illusion. He also insisted that God is an illusion, and, in agreement with Richard Dawkins, design in nature is an illusion.

Daniel Dennett was also closely associated with Richard Dawkins, Sam Harris, and Christopher Hitchens as the “Four Horsemen of the New Atheism.” They all wrote best-selling books challenging the existence of God. Dennett was a vocal atheist, a Committee for Skeptical Inquiry member, and served on the advisory board of the Secular Coalition for America. He was also awarded the Freedom From Religion Foundation’s board of distinguished achievers.

Dennett believed that evolution by natural selection and adaptation accounts for every aspect of life, including morality. In his book Breaking the Spell: Religion as a Natural Phenomenon, he attempted to give a naturalistic explanation for religious belief. Is consciousness an illusion? According to Dennett, the answer is “yes.” If you have trouble accepting that concept, Dennett’s 1991 book Consciousness Explained attempted to explain it. His 2017 book From Bacteria to Bach and Back: The Evolution of Minds expands on Dennett’s concept of “competence without comprehension.”

According to Dennett, the Darwinian theory accounts for all aspects of our existence. No intelligent designer is needed because evolution explains everything. The “Four Horsemen of the New Atheism” alludes to the four horsemen of the apocalypse described in Revelation chapter 6. Those horsemen represent conquest, warfare, famine, and death, bringing judgment on the people of Earth. The four horsemen of atheism are now down to two since the death of Hitchens and now Dennett, but I am sure others will take their place.

What we need today are champions for God who will take the message of God’s love and redemption and peace and hope in Jesus Christ. If consciousness is an illusion, everything is meaningless, but if consciousness is reality, everything changes. Our lives have meaning, purpose, and value because God created and loves us.