science Archives

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.

May 2, 2024May 1, 2024

Fungi Are All Around Us and Even Inside Us

The cover of the April 2024 issue of National Geographic and its first article are dedicated to what the editors call “Fabulous Fungi.” The articles deal with “The Wondrous World of Fungi” with incredible pictures and a narrative that exposes what the authors call “The Hidden Kingdom.” Most of us probably don’t realize that fungi are all around us and even inside us.

Various fungus species have a symbiotic relationship with many plants and animals, including humans. Most plants today depend on mycorrhizal fungi living in their root systems to metabolize sugar from photosynthesis while bringing nutrients and water to the plant.

Fungi are heterotrophs, organisms that take nutrition from other organic sources such as plant or animal matter. They can break down wood and dead plant material by releasing and reabsorbing enzymes. Without fungi, dead plants and animals would pile up on forest floors, and plants would be unable to take in needed nutrients.

Fungi are all around us and even inside us. They work in our digestive system, and scientists are still studying what they do. Cancer research has found that fungi in the colon, breast, and lungs are related to the metastatic spread of cancer and can be used to predict the presence of cancer and perhaps even treat it.

Scientists estimate that there are around five million species of fungi, and they are more diverse than plants or vertebrates. In 2015, our program released a children’s book titled “The Friendly Fungus Among Us,” written by Charlsey Ford and John Clayton. This little 16-page booklet, written for children, points out a few benefits and uses of fungi, including food, medicines, insecticides, and detergents. It also introduces children to the role of yeast and truffles in food.

God’s design is so incredible that science is just scratching the surface of the things that enable human life to exist on Earth. Trying to explain it by undirected evolution is impossible. “We can know there is a God through the things He has made” (Romans 1:20) is true. We see evidence everywhere, even in the fact that fungi are all around us and even inside us, and life would not be possible without them.

Reference: National Geographic, April 2024

The Friendly Fungus Among Us children’s book is available from the Does God Exist? ministry by contacting jncdge@aol.com or in the set of 16 children’s books at powervine.store.

April 30, 2024April 30, 2024

Animals Can Learn From Their Peers

Scientists want to know how much animals can learn from their peers. How much animal behavior is genetic, and how much can they learn by watching other members of their species?

Many years ago, a friend who raised golden labradors showed me how her favorite lab had learned to recognize the design and shape of an inverted can that covered a treat. She used ten similar cans, but only one had a pattern on it. She had taught her favorite dog to turn over that can to get the treat, which was an odorless biscuit to eliminate the dog using its sense of smell.

The dog got the right can ten times out of ten, going straight to the can with the treat every time. She then took a puppy and put it with the adult dog and the ten cans. The puppy followed the adult dog one or two times, and then when it was alone, it ran straight to the can with the treat and turned it over. Clearly, animals can learn from their peers since the puppy had learned by watching the adult dog.

Various experiments show animals learning from others of their species, but what about insects? Researchers at Queen Mary University in London trained bumblebees to do complex behavioral actions. The researchers set up a container with bumblebees and a blue lever that unlocked a door when pushed. There was also a red lever to open another door leading to a container of sugar water. The researchers successfully taught a group of bumblebees how to press the two levers in sequence to access the sugar water.

When they added new bees to the container, the newcomers “watched the original bees and figured out how to complete the puzzle—showing for the first time that insects can learn multistep processes through social interaction.” We could challenge this experiment since bees have a built-in ability to convey information to other bees. When a bee returns to the hive after finding food, it can do a “dance” that tells its fellow bees where the food is.

Animals and insects communicate, but language is unique to humans. The Bible story of the Tower of Babel (Genesis 11:1-9) shows how essential language is to human interaction. Animals can learn from their peers, but God gave humans alone the ability to communicate using language and symbols. Only humans can convey moral issues, beliefs, and values through grammar and vocabulary.

References: phys.org and nationalgeographic.com

April 29, 2024April 28, 2024

A Plant That Sweats

You and I keep cool in hot weather by evaporating water from our skin. For water to evaporate, it has to absorb roughly 540 calories per gram of water without changing its temperature. That removes a lot of heat from our bodies, allowing us to survive hot weather. Botanists have discovered that the carline thistle plant cools itself by evaporation. You could say it’s a plant that sweats.

Carline thistles grow in an area of southern Spain where almost no other plants can survive. In August, everything shrivels and dies in the arid region around the Sierra de Cazorla mountain range, except the carline thistle. By evaporative cooling, the flowers on this plant average nine degrees cooler than the surrounding air and may be as much as 18 degrees cooler.

To perform photosynthesis, leaves allow carbon dioxide to enter through tiny pores called stomata. During this exchange, some water in the leaf escapes, allowing some evaporation. However, the carline thistle is the only known plant that allows substantial quantities of water to move to the surface, making it a plant that sweats. That provides cooling to allow the carline thistle to survive the heat of Spain’s Mediterranean habitat.

Researchers still don’t know how the carline thistle can retrieve enough water from the ground to continue this process. They plan to study the root structure for novelties that might explain it. The carline thistle’s advantage is access to pollinators. Since all other plants die, the thistle has sole access to bees and other pollinators when it flowers in August.

Scientists are interested in this plant’s ability to survive the heat as the planet enters a period of increased temperatures. Vast areas of Earth face drought conditions, and there have always been regions of high temperatures and a lack of precipitation. God has designed plants to survive every conceivable climatic condition, even a plant that sweats. We must use what God has given us intelligently, and the carline thistle deserves our study and attention.

Reference: “This Flower Refrigerates Itself to Survive Scorching Summers” in Scientific American, May 2024, pages 18-19.

April 26, 2024April 23, 2024

The Design of Peregrine Falcons

Human structures often upset the natural balance of birds. One example is the abundance of pigeons in urban areas, which disfigure statues and decorative stone buildings and spread various diseases. One solution to the pigeon problem has been the introduction of peregrine falcons. The design of peregrine falcons has allowed them to adjust to human structures and use their highly designed physical characteristics to defend themselves in both city and rural areas.

The peregrine falcon is not exceptionally large, but it is designed for high-speed flight and uses that ability to kill other birds, even eagles. The peregrine will fly high and dive on an intended prey at over 200 miles per hour. That speed produces many challenges for these birds. The change in pressure would cause the lungs of the peregrine falcon to burst, except for the design of its nostrils. The falcon has bony tubercles on its nostrils that guide airflow away from the nasal passages, reducing the change in air pressure.

Another problem with a high-speed dive is vision. Most of us have had the experience of having our eyes water when facing a strong wind, but the peregrine falcon has nictitating membranes that are essentially a third eyelid that keeps the eyes clear. Also, the design of peregrine falcons shows a dark area below the eye, which reduces glare.

In the city, pigeons comprise a large percentage of the peregrine falcon diet. The birds nest in the windows of skyscrapers, giving people in the offices a view of their lifestyles and the production of offspring. Several years ago, office workers in South Bend, Indiana, complained that peregrine falcons were killing pigeons and bringing their victims back to the nest. People in tall buildings were horrified when the falcons tore up the bodies of pigeons to feed their young. They didn’t realize that peregrine falcons help maintain the balance of birds in urban areas, meeting an important need for city dwellers. In the wild, peregrine falcons eat rodents and other small mammals.

Airplane designers have studied the design of peregrine falcons and copied many of their features. Like many other engineering problems, we can look to what God has created and copy the design to solve our own problems. Neither a jet airplane nor a peregrine falcon is a product of accidental change. Design requires intelligence and purpose, and the peregrine falcon is a classic example of both.

Reference: allaboutbirds.org, nationalgeograph i c.com, and wikip e dia.org

April 25, 2024April 23, 2024

The Precision of the Cosmos Shows Design

The Precision of the Cosmos Shows Engineering Design

One of the awe-inspiring scientific findings in astronomy is that the process of creating the cosmos is so exquisitely precise that it defies the notion of chance. In other words, the precision of the cosmos is a testament to an engineering design that leaves us in awe.

The latest measurements reveal a delicate balance in the cosmos. It is expanding at a rate that is precisely what is necessary for the Earth and life to exist. If the rate of expansion were a billionth faster, stars and planets would never coalesce. If the expansion were a billionth slower, gravity would pull everything together in a gigantic crunch with no stars or planets existing. The material universe is expanding at precisely the rate necessary for a planet able to support life to exist, a fact that fills us with wonder and appreciation for the Creator.

Even the leftover material of creation displays the precision of the cosmos. As of 2024, astronomers have observed 5008 comets, and the European Space Agency (ESA) and NASA have determined their orbits. However, life on Earth has not been endangered by any of these space-going travelers.

Experts in the field are now writing about the implications of the recent understanding of astrophysics. Dr. Paul Davies, an Arizona State University astrophysicist, wrote, “The laws which enable the universe to come into being spontaneously, seem themselves to be the product of exceedingly ingenious design. If physics is the product of design, the universe must have a purpose, and the evidence of modern physics suggests strongly to me that the purpose includes us.” (Super Force: The Search for a Grand Unified Theory of Nature, Simon and Schuster, 1984)

James C. Peterson, writing in the Journal of the American Scientific Affiliation (March 2024, page 1), writes, “So if the physical universe we can observe indicates that there is something not-material which is powerful enough to create the material; that is purposeful, smart, and generous enough to make it happen in a way that supports the development of conscious life; it might be expected that such a creator would have an interest in the resulting conscious life.”

These are scientists writing in scientific literature, not preachers writing in theological journals. The precision of the cosmos speaks loudly of its Creator. In the words of the Psalmist, “The Heavens declare the glory of God; and the firmament shows His handiwork” (Psalms 19:1).

Reference: “Big, Indeed Epic, History” in Perspectives on Science and the Christian Faith, March 2024, page 1.