science Archives

April 18, 2023April 15, 2023

The Complex Design of Insect Brains

We may see insects as very simple organisms, but scientists see the complex design of insect brains. The human brain has over 80 billion nerve cells, each with about 10,000 connections. To understand the wiring in the human brain, you have to start small. For that reason, scientists mapped the 548,000 connections in the brain of a fruit fly larva. The goal is to learn how to treat disorders in the human brain.

The scientists had to slice the tiny brain into thousands of very thin sections and then use an electron microscope to capture an image of each slice. They could only accomplish the analysis by using powerful computers and specialized analytical tools. Even though they are small, fruitfly brains have regions for decision-making, learning, and navigation. In addition, they have left and right sides, like human brains.

Scientists call the complete brain wiring connections the “connectome,” and this work has practical applications. If we could understand the human brain’s connectome, we might be able to treat learning disorders, schizophrenia, and behavioral issues. Although researchers have been able to map the brain of the fruit fly larva, they are still far from mapping the brain of an adult fruit fly. Mapping the human brain will be even more challenging.

As we read data about the complex design of insect brains, we see how incredible the design of life is. The brain is a vital part of our existence and is far more complex than any computer humans might develop. To think that this complexity could be the product of blind chance processes requires faith beyond the thinking of any reasonable person.

The complex design of insect brains tells us that the “Wisdom” spoken of in Proverbs 8:12 and 22 demonstrates God’s incredible engineering and design. “I wisdom dwell with prudence and find out knowledge of witty inventions … the Lord possessed me in the beginning of His work.”

References: The journal Science, and “The first wiring map of an insect’s brain hints at incredible complexity” on NPR.org

April 17, 2023April 15, 2023

Tectonic Plates and Continental Drift

One of the interesting designs of planet Earth is the fluid nature of the crust and interior of the planet. Looking at a global map suggests that North and South America must have been connected to Europe and Africa in the past. As technology has improved, we have been able to see the connections and identify and measure the slowly moving tectonic plates and continental drift. This movement gives rise to surface features that affect human life and bring resources to supply the needs of all living things.

In 2005, geologists tracked 163 earthquakes as a 35-mile-long chasm opened in Ethiopia’s Afar Desert, where a volcanic eruption occurred. In 2018, a giant fissure 50 feet deep and 65 feet wide opened west of Nairobi, Kenya. These changes are surface expressions of movement in the mantle of magma inside the planet. The movement of tectonic plates happens very slowly, but even at a rate of less than an inch a year, scientists can measure it.

Tectonic plates and continental drift formed the Red Sea and the Gulf of Aden. Along the edges of the various plates, material from the surface sinks back into Earth’s interior, while volcanos bring new materials to the surface, creating a colossal recycling system. Planet Earth is active, continuously producing new land with fresh minerals.

Because this process is so slow, its impact on human existence is minimal. However, people continue to build large cities along the fault lines. In California, we have the making of a colossal disaster as cities like Los Angeles straddle a geologically active region. The warnings are there, but they go unheeded.

Understanding the design of our planet with tectonic plates and continental drift should enable us to avoid geologic catastrophes and locate the mineral resources we need. Proverbs 8:22-26 finds “Wisdom” speaking about her presence at the beginning of God’s creation work. We see God’s wisdom and patience as we look at our planet’s design.

References: Wikipedia “Afar Triangle,” “Afar Triple Junction,” and “Great Rift Valley, Kenya”

April 13, 2023April 11, 2023

The Weight of Rain

How much does rain weigh? We just had a one-inch rainfall in a single thunderstorm. So let’s do some simple calculations to determine the weight of rain.

One acre of ground is 43,560 square feet. A one-inch rain is 1/12th of a foot, so the total volume of water that fell on every acre was 3,630 cubic feet. The density of water is 62.4 pounds per cubic foot. If you multiply 3,630 cubic feet by 62.4 pounds, you will see that 226,512 pounds of water (or 113.26 tons) fell on every acre of ground. There are 640 acres in a square mile, and most thunderstorms cover many square miles. So, each square mile of land received 72,486.4 tons of water in a one-inch rainfall. God’s power and energy are beyond our understanding, but we see a small piece of it in the weight of rain that falls on us.

There are many lessons involved in looking at these numbers. First, we should not underestimate the power of water to erode human structures and natural areas like the canyons we see and enjoy. We often overlook the use of water to generate electric power, and it is a renewable resource. Also, God designed water to be the basic substance of life.

The Bible refers to water many times. Proverbs 8:24-29 speaks of water as a product of wisdom and design. Psalms 23:2 refers to the peace of water and the benefits it brings. Revelation 22:1-2 repeats that, and verse 17 refers to the “water of life.” Song of Solomon 8:7 tells us that love is the only thing water cannot quench. And we need to remember that God used water to cleanse a corrupt Earth in the flood of Noah (Genesis 6:5-8).

As we learn more about other planets and moons, we see how blessed we are to be on a planet with abundant water. This is no accident. Scientists have only recently discovered the process required to make water, and we cannot overemphasize the importance of taking care of the water God gave us. Water continues to shape our planet, and we must not restrict it from what it was designed for by wasting or polluting it. How much does rain weigh? The weight of rain is great, but its value is much greater.

April 12, 2023April 11, 2023

Water Stewardship Past and Present

One of the major issues facing us today is how we get enough water to the right places to meet human needs. Between climate change and the growing human population, water availability is a huge concern in countries worldwide. We either have too much water resulting in floods or droughts that threaten food shortages. The fact is that God has equipped planet Earth with plenty of water. The problem is human water stewardship is not what it should be.

In the year 330, Roman Emperor Constantine took an ancient Greek city known as Byzantium and renamed it New Rome to become the new center of the Roman Empire. As the city grew, it became known as Constantine’s City or Constantinople. Three decades later, a court orator named Themistius wrote that “the city thirsts.” The city was surrounded by the sea on three sides, but it needed fresh water for its growing population. So, in 340, Constantius II began a major aqueduct construction project completed under Roman Emperor Valens In 373. The enormous project required an amount of stone equivalent to the Great Pyramid of Giza and enough mortar to fill 500 Olympic-size swimming pools. With the aqueducts, reservoirs, and a system of cisterns, Constantinople could truly become the new Rome in the fourth and fifth centuries.

Many areas today face a shortage of water. Six states, including 40 million people in the American West, receive water from the Colorado River. The states are Arizona, Nevada, New Mexico, Colorado, Utah, Wyoming, and California. In 1922, the states made a compact giving California the largest share of the water. Unfortunately, the Colorado River has been shrinking in recent years while the human population has grown. The pact made in 1922 is not working well, especially for Arizona, and the situation requires better water stewardship.

Could we build a water system today analogous to what the Romans did almost 1,700 years ago? Can you imagine the benefit to all Americans if we had such a water distribution system in the western US? Droughts and flooding occur, but the effect is made worse by poor stewardship of the water resources God has given us. People in Africa, and other areas, need wells to provide safe water, and Christian organizations are working to meet that need. We can and must do more, and Christians should be the first to realize the importance of water stewardship because we honor the Giver of every good and perfect gift. (See James 1:17 and Mark 9:41.)

References: “The City Thirsts” by James Crow in Current World Archaeology magazine # 117 for February/March 2023, and “The Colorado River war and the growing problem of less water” on TheWeek.com.

April 11, 2023April 7, 2023

Terrifying Effects of Alcohol

A flurry of new research reports on the terrifying effects of alcohol. The University of Victoria, The Cleveland Clinic, The American Cancer Society, the U.K. Biobank, and the National Institute on Alcohol Abuse and Alcoholism have all contributed the following data on alcohol consumption:

One of the terrifying effects of alcohol is that it contributes to more than 75,000 new cancer cases and 19,000 deaths in the U.S. every year.

Alcohol is the direct cause of seven types of cancer – oral cavity, throat, larynx, liver, breast, and colorectal cancer. Heavy drinkers have five times the risk, and moderate drinkers have 1.8 times the risk. In addition, one drink a day raises the risk of breast cancer by 9%.

Alcoholic liver disease kills 22,000 Americans every year. Two alcoholic beverages a day for five years can damage the liver, and one drink a day increases the risk of heart attack and stroke by up to 20%.

Previous claims said that red wine could do good things to improve health, but the ingredient in red wine that does this is the antioxidant resveratrol. A person would have to drink 500 liters of red wine daily to get significant benefits, which would cause high blood pressure, stroke, and abnormal heart rhythm.

A Gallup study in 2021 has shown that 60% of Americans drink an average of 3.6 drinks a week. Just under 50% reported binge drinking – defined as consuming four drinks in a sitting for men and three for women. We are all bombarded with ads and social pressure that makes drinking sound like something we all need to have a good time. The fact is that the financial cost of using alcohol is massive.

God has told us that our bodies and sacred, the dwelling place of God’s Spirit, and that desecrating our bodies will bring us to ruin (1 Corinthians 3:16 17). The terrifying effects of alcohol result in immense pain to humanity. One way to oppose the use of alcohol is to educate people about its destructive nature.

Reference: The Week for 3/24/23, page 11.

April 7, 2023April 7, 2023

Broken Heart Syndrome

The medical name is takotsubo cardiomyopathy, but a more straightforward name is “broken heart syndrome.” Extreme stress or emotions can cause it. That includes the loss of a dear loved one. A “broken heart” can temporarily weaken your physical heart muscle. Research has shown a person has a 41% increase in the risk of dying in the first six months after losing a spouse.

Extreme emotional stress increases the release of the hormones cortisol, adrenaline, and norepinephrine while causing a reduction in the feel-good hormones of oxytocin, dopamine, and serotonin. The result can be broken heart syndrome with depression, poor sleep, fatigue, anxiety, high blood pressure, and physical pain.

I have often heard broken heart syndrome used in connection with Jesus as he agonized in prayer before the crucifixion. After all, while Jesus was fully God, he was also fully man. He was “tempted in all things just as we are” (Hebrews 4:15). But what about the disciples? They had spent three years with Him. He was their closest friend as well as their teacher-rabbi. They had begun to recognize that He was the Messiah who had come to restore God’s kingdom. Imagine the shock they experienced when they saw him crucified like a common criminal. They must have considered the three years they spent with Jesus all for nothing, and their faith in God must have been shaken.

Broken heart syndrome literally changes the structure of your heart, even though we know that the physical organ is not the center of our emotions. So you could say that those disciples were brokenhearted emotionally and physically. They fled and hid and wept and pondered. They were in despair.

However, in a few days, they became bold proclaimers of Christ. They had a new courage that they never had before. They were not afraid of the Roman authorities or the Jewish leaders. There is only one possible explanation. They saw, heard, touched, and even ate with the resurrected Christ.

The disciples were in agony for two days, but on the third day, their broken hearts were restored to “brave hearts.” They never stopped proclaiming Christ’s resurrection, even though their lives were tragically shortened because of their message. There is no way to explain their courage except that they knew first-hand that it was true.

Reference: https://en.wikipedia.org/wiki/Takotsubo_cardiomyopathy

April 6, 2023April 2, 2023

The Mystery of Oumuamua

An interesting space mystery circulating since 2017 has been the story of an outer space object named Oumuamua. This object is shaped like a cigar, is dark in color, and has an unusual orbit. Astronomers in Hawaii first discovered it and gave it the name “Oumuamua,” which means “scout” or “messenger” in Hawaiian. Part of the mystery of Oumuamua is deciding what it is – perhaps an asteroid or a comet. Oumuamua is smaller than most comets at 300 to 3000 feet (100 to 1,000 meters) long. It has no visible tail, as most comets do. A surprising thing about Oumuamua is that as it orbited the Sun, it sped up and accelerated away from it.

The media jumped on the scientific announcement of Oumuamua. Tabloids predicted it was an alien spaceship that picked up hydrogen from the Sun, and that’s why it accelerated. We have repeatedly pointed out that nothing in the Bible tells us whether or not there is life in outer space.

Like most tabloid stories, there is no reported scientific explanation of what Oumuamua is and why it behaves as it does, apparently tumbling through space. Comets have a great many volatile materials frozen inside them. When the Sun heats them, those materials vaporize, creating a small force, but usually not enough to alter the comet’s path.

We can learn some lessons from the mystery of Oumuamua. One is to be very careful about what you read in the media or hear on TV news broadcasts. A more important message is that there is a lot of material left over from the creation process that is traveling through space. Space is not a pure vacuum, and capturing and analyzing some of that material could answer many questions about the science involved in the creation.

The most important message is that the universe is carefully designed, and we see signatures of that design everywhere we look. Oumuamua tells us a little more about the mysteries of space and the even bigger wonder of the intelligence that created it all. “The heavens declare the glory of God, and the skies proclaim the work of His hands” (Psalms 19:1).

References: USA Today 3/26/23 and Wikipedia

April 5, 2023April 2, 2023

The Misunderstood Bats

What animals have been maligned and villainized the most by humanity, yet they are the unsung heroes of the animal kingdom? The Nature Conservancy and Bat Conservation International say the misunderstood bats fit that description. People think that bats hunt human victims and drink blood. On the contrary, Vampire bats do not go after human victims and are shy and gentle in behavior. They also only make up a tiny percentage of the total bat population.

Studies of the Bracken Cave bats in Texas show they eat 140 tons of flying beetles, winged ants, and moths every night, saving a billion dollars in crop damage. That is just in one area of Texas, but other bats eat their body weight in insects every night. Bats also are essential pollinators and disperse hundreds of seeds. Bats are vital to the balance of our natural world, and scientists studying bats tell us that they are declining in number. Can you imagine what life on Earth would be like if we eliminated the animals that eat insects?

As a teenager in southern Indiana, I was a spelunker – one who explores caves. The caves we explored had massive numbers of bats, and several times we were in the caves when the bats were flying out for their feeding binges. I never was bitten by a bat, and they used their echolocation to avoid us. When we found huge piles of bat guano, it never occurred to me that it all came from bugs they had eaten.

God has intelligently designed the systems of life on planet Earth, and we need to care for and protect them. When humans destroy animals such as the misunderstood bats, we invite disaster for our well-being.

Reference: The Nature Conservancy and Bat Conservation International research report released on March 3, 2023

April 4, 2023April 2, 2023

Black Heron Canopy Feeding

If you watch animals in the wild finding food, you will see some amazing techniques that are hard to believe could be the product of blind chance. In many cases, the food-finding system has so many parts that it would take various simultaneous changes for them to happen by chance. Securing food is often hazardous for the animal, but eating is a higher priority than avoiding danger. An example of all this is the canopy feeding of the black heron (Egretta ardesiaca) in Sub-Saharan Africa.

The jet-black color of the black heron causes two problems for the bird. One is that there is no camouflage in its coloration, so predators have no trouble seeing it. The black heron is very obvious from above or on the ground. The other problem is that being black means the bird is in danger of overheating because black absorbs solar radiation in the form of heat.

These problems make you wonder about the wisdom of the black heron being black. This is where we find an ingenious design feature built into the bird, allowing it to have all it wants to eat. The black heron eats fish, but finding fish is challenging for all fish-eating birds. Black herons solve this problem by spreading out their feathers in an umbrella-like fashion for what is called canopy feeding. Small fish in the area looking for shade are drawn to the bird’s canopy. Because of its black color, the water under the bird is too dark for the fish to see the heron.

This cloak of darkness and the cooling create a huge attraction for fish. As they gather in the heron’s shade, the bird can simply choose which fish it wants to eat. This canopy feeding provides food for the heron while controlling the small fish population so they don’t overgraze the area.

To attribute the black heron’s canopy feeding to trial and error or chance requires some imagination. To attribute the black color, which seems counterproductive for the climate, to the survival of the fittest is beyond reasonable thinking. God’s design and creative wisdom are evident in all life forms. Romans 1:20 tells us that we can know there is a God through the things He has made, and the black heron is an excellent example of the truth of that statement.

Reference: National Geographic, May 2023, page 20

March 31, 2023March 31, 2023

Animal Communication in Turtles

An interesting fact of science is that researchers investigate the natural world in terms of human actions. An excellent example of that is our understanding of animal communication. Recent studies have shown that turtles have a rather complex system of communication which researchers have missed because the communication is very low-pitched and quiet. The frequency of the turtle communication is below 20 hertz, putting it below human hearing limitations.

With new listening devices, researchers have found that baby turtles chirp to one another while they are still in their eggs. They discovered this communication in giant South American river turtles called arraus. The apparent purpose is to coordinate their hatching time. When all the baby turtles come out of their eggs at the same time, it dramatically improves their chances of making it to the river before being snatched by a predator. The researchers also found that mother turtles use sounds to respond to the calls of their young and shepherd them to the water.

You can add turtles to the growing list of animal communication with sounds above or below the frequencies that humans can hear. Examples of subsonic or ultrasonic communicators are whales, fish, bats, and numerous birds. God has designed life to have maximum survival potential. Being able to communicate is just one of the tools that animals have been given to enhance that objective.

Reference: Lead research author Camila Ferrara of the Wildlife Conservation Society speaking to the Washington Post as reported in The Week magazine, February 3, 2023, page 22.