Tag: science

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Leaf Designs to Preserve Trees

Leaf Designs to Preserve Trees
We live in a part of the world where there are many trees. We also experience heavy winds that frequently blow down human-made structures. It is interesting that healthy trees are almost never blown down. When you stop to think about it, you would expect trees to be major victims of high winds. That is not the case, and it is due to leaf designs to preserve trees.

To survive strong winds, trees need two things. The most obvious is structural support–strong, flexible branches, sturdy trunks, broad bases, and good root anchorage. A more subtle requirement is leaf designs to preserve trees. Leaves must have minimal wind drag. A fluid, such as air, flowing around an object generates drag. To minimize drag requires some streamlining to reduce the amount of friction between the fluid and the object. A highly streamlined object will usually be gently rounded upstream and elongated and pointed downstream.

For healthy trees, the leaves offer the most surface area and thus the most drag. Trees most commonly blow over when in full leaf, so leaf design is critical to the survival of the tree. Different trees have different design features, but all of them are designed to avoid destruction in a wind storm. American holly leaves have a method that involves the leaves being able to flatten themselves against each other. When the wind becomes strong, the leaves turn and lie flat significantly reducing the drag.

Tulip tree leaf design allows the leaves to roll up when the wind gets strong. The blade of the leaf points away from the stem. As the wind blows against the leaf, it forms a cone pointing upwind at the stem. The blade forms the broad area of the cone away from the wind direction. The higher the wind, the tighter the cone and the less the wind resistance. Black locust leaves similarly roll together to produce a cylinder.

Each of these designs depends on the properties of the leaf. If the leaves were too stiff, they could not assume the right geometry. The flexibility of their stems has to be high, and the surface of the leaf must be carefully designed and restricted. You can argue that natural selection does all designing and that given enough time it will select the proper shape. But remember that changes in climate mean you don’t have infinite time to apply the process.

God’s engineering wisdom gave us leaf designs to preserve trees. The leaf design allows the longest season for each tree. Sit in your backyard on a breezy day and watch what the leaves do to preserve that tree you prize so highly.
–John N. Clayton © 2018

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Hamburgers Without Beef

Is Hamburgers Without Beef in Your Future?
There has been a lot of hype about red meat and its potential damage to our health. The FDA held its first public hearing about growing meat in the laboratory instead of using cattle–or for that matter fish or birds. The challenge is to produce hamburgers without beef.

One process that scientists are experimenting with involves growing “cultured meat” in the laboratory from real animal cells. The other idea is to create “meat” from plants with the protein and taste of real beef hamburgers without beef. Beef production is the top emitter of greenhouse gases, and growing beef from cows emits over 100 times more greenhouse gases than plant material would emit to produce the same amount of meat. Patrick Brown of Impossible Foods in Redwood City, California says “Animals happened to be the technology that was available 10,000 years ago for making meat. We stuck with that technology, and it’s incredibly inefficient by any measure–and destructive”.

When Nicolas-Joseph Cugnot introduced the first combustion steam-powered vehicle in 1771, it offered significant advantages over the horse. In 1898 urban planners in New York were concerned about the 50,000 tons of horse excrement that 175,000 horses in New York City were producing every month. Ten years later Henry Ford introduced the Model T which eventually eliminated the problem. How long will it take for plant-produced beef to solve the environmental and health problems caused by the use of cows to produce food? The beef industry is huge in America, hamburgers without beef are likely to be available in Europe and Asia before they are accepted here.

Some people believe that Christians cannot eat manufactured meat on religious grounds. Even those who go back to the meat prohibitions of the Old Testament will find no support for forbidding plant-produced hamburgers. In Genesis 9:3, God told Noah that he could eat of any “green plant,” but the law placed massive restrictions on eating animal-based protein. In 1 Corinthians 8:8-13 and in Romans 14:1-5 Paul expressed concern over the influence of Christians who because of their freedom to eat anything, might pose a problem for those who don’t understand that food is not a religious issue. Romans 14:17 summarizes this by saying, “The kingdom of God is not about meat and drink; but righteousness and peace…” In 1 Corinthians 10:25-27 Paul tells Christian to eat whatever is set before them “asking no questions.”

The silly aspect of religious concerns about eating manufactured foods is that we already do it. Think of the list of manufactured foods that we eat now. They include artificially produced fruits and vegetables such as tangelos, and hybrid apples, corn, and tomatoes. Other food substances include margarine, soy milk, artificial sweeteners, butter spray, etc. We copy God’s design of the foods we eat to enlarge the food supply of the planet and avoid waste.

Food chemistry is highly complex, but the more we understand the creation, the closer we get to the Creator. Let us thank God that we don’t go to bed hungry. Also let us thank God He has given us the ability to meet the needs of the hungry as we understand how we can produce and use these new foods, including hamburgers without beef.
–John N. Clayton © 2018

Data: Science News for September 29, 2018, page 11, “Dreaming Up Tomorrow’s Burger” or read it online HERE.

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How You Can Tell Where It Is

How You Can Tell Where It Is
When you look at something or hear it make a sound, have you thought about how you can tell where it is? How do you determine its direction and how far away it is? Studies of human sight and hearing tell us that two different systems are involved. One system works for sight, and another for sound.

Hold up a finger at arm’s length from your face. Close one eye and look at the finger and what is beyond your finger. Now switch eyes, and you will see that objects beyond your finger appear to move. When you look at a distant object, the brain receives two signals–one from each eye. Based upon how much the background seems to vary, your brain then computes how far away the object is. That’s how you can tell where it is because your brain combines both images to give you a distance perspective.

To locate a sound’s source, the brain gets a signal from each ear. The two signals arrive at slightly different times depending on the width of the skull and the direction of the sound. We cock our heads to take into account the angular location of the source, and the brain creates an auditory spatial map that pinpoints the sound. Your senses handle sound differently from sight because of the difference in speed of the two signals. Light travels at 186,000 miles (300,000 m) per second and sound travels at 1087 feet (331 m) per second. Your brain combines the object’s sound signals received by both ears, and that is how you can tell where it is.

All of this is amazing enough, but researchers at the Max Planck Institute for Biological Cybernetics in Tubingen, Germany, and Queen’s University in Kingston, Ontario wanted to learn more. By using visual tests on a barn owl while monitoring its brain activity, they found that different nerve cells respond to “specific angular differences.” The barn owl used auditory methods with its vision to give it a three-dimensional map of the area. In that way, the owl has an instant picture of where to fly to get the most unobstructed path to its target. The director of the institute said, “We speculate that the brain uses similar algorithms to solve similar problems” such as matching problems.

We take so much for granted about how our basic senses work. As we have said before, David got a small understanding of this which caused him to say in Psalms 139:14, “I will praise you, God, for I am fearfully and wonderfully made. Marvelous are your works.”
–John N. Clayton © 2018

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Ultimate Fluid Machine

Ultimate Fluid Machine
Imagine designing a fluid system to maintain a complex machine. The system must be able to flush any waste from all parts of the machine. It must be able to supply energy to every part of the machine, even though those parts operate in different ways. It must be the ultimate fluid machine.

The machine must function in an environment where getting enough air for it to run is an issue, so your fluid system must carry oxygen to every nook and cranny of the machine. The fluid system must also transport materials that can fight any invader, and if there is a leak in the fluid system the system must be able to flush the opening and seal the leak immediately!

I suspect that by this time you have surmised that the complex machine we are talking about is your body, and the fluid system that maintains your body is the vascular system. To do the things we have listed (and many more things we have not included) your body has 60,000 miles of blood vessels according to the National Institutes of Health and NASA. That means that if we could take all of the blood vessels out of your body and attach them end to end, the resulting series of vessels would go all the way around the Earth more than two times.

The ultimate fluid machine exists in every human on the planet. Simply knowing that emphasizes the accuracy of the clear description of Psalms 139:14, “I will praise thee, Lord, for I am fearfully and wonderfully made. Marvelous are your works…”
–John N. Clayton © 2018

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Can Design Have Multiple Purposes?

Firefly- Can Design Have Multiple Purposes?
Can design have multiple purposes? That is a question asked by some scientists in a study led by Jesse Barber of Boise (Idaho) State University. The specific design feature they studied is the flashing light of fireflies. Do they have more than one purpose for their flashes?

We always believed that a firefly flashes its light to attract mates. That is reasonable and true, but it is an oversimplification of what the flashing does. Many times living organisms have a warning system built into their design to let predators know they are not good to eat. Barber and his associates suggested that fireflies taste bad and that the flashing warns predators not to eat them.

To test this theory, the researchers put bats that had never been around fireflies into a cage with fireflies. The bats learned in two or three interactions that a flashing bug is not good to eat. Barber says the bats quickly did a routine of “catch, taste, drop.”

Barber’s team then painted the flashing end of some lightning bugs with two coats of black paint so the bats could not see the flashes. Bats faced with the painted fireflies took up to 45 minutes to learn not to try to eat them. It seems evident that the flashing of a lightning bug has more than one function.

Can design have multiple purposes? This study answers that question with a “Yes.” Designing a system that has multiple benefits is engineering at its best. God’s design in nature is amazing! The more we know of the creation, the closer we get to the Creator and the more we see His planning and design.
–John N. Clayton © 2018
This study was published in August 22 Science Advances which you can read HERE.
Science News reported on it in their September 29 issue (page 4) which is available online HERE.

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Natural Disaster and God

Natural Disaster and God Every time natural disaster strikes anywhere in the world, people tend to blame God for what happened. The current examples are the hurricane in the panhandle of Florida, and the catastrophic earthquake in Indonesia. What atheists and skeptics fail to realize about natural disasters is that the vast majority of catastrophes are due to human ignorance and mismanagement. Both of the current crises demonstrate that point.

The major loss of life and devastation in Indonesia is in an area that was built on a restored landfill. Gravel, sand, and dirt were brought in to make living space for what were mostly poor workers and laborers. Engineers have warned for a very long time that the land under the highly populated area was unstable, and the earthquake was enough to cause that land to move in a significant way. You could call this a human-designed natural disaster.

In America, we have the same situation in New Orleans and Los Angeles. New Orleans is built on an area that is soft and prone to flooding, and part of the city is even below sea level. Los Angeles is built in an earthquake active area riddled with faults. It isn’t a question of whether a severe earthquake will happen in the Los Angeles area, it is just a question of when. There will be a catastrophe when that happens, and God will be blamed for causing it.

Hurricane Michael is a demonstration of another human-caused natural disaster. One of the designs of our planet is the method which brings water to areas that would otherwise be a desert. At the equator, the direct sunlight evaporates ocean water which falls as rain causing tropical rain forests. The remaining dry air moves north or south in what is called the “Hadley Cells.” When that dry air cools and returns Earth’s surface at 30 degrees latitude, it produces desert conditions. Most of the world’s great deserts are found at 30 degrees north or south latitude–the Sahara, the Australian Outback, the Mohave, etc.

In the southeastern United States, 30 degrees north latitude runs through northern Florida. That area would be a desert were it not for hurricanes. The heating of the ocean in the summer is sufficient to lift massive amounts of water which are then carried to the land restoring lakes, rivers, and underground aquifers. Without that large water supply system, that area would be a desert like the Sahara. The land area around the Gulf of Mexico in its pristine state had barrier beaches and mangrove forests that moderated the wind and storm surge. When I was a child living in Alabama, we looked forward to “hurricane parties” when we would “button down” and enjoy not having to work. The storm’s damage was limited, and even the storm surge was never a problem. That was 80 years ago.

Since that time, we have modified the shoreline stripping the barrier beaches of vegetation, and building houses where they are easily destroyed by water or wind. Even the vast mangrove swamps that were a buffer to storms have been removed, and channels have been built lined with aluminum houses, golf courses, and boat facilities. It was an invitation for a natural disaster.

We are sympathetic to those who have suffered because of the greed and foolishness of city planners and real estate salespeople. But don’t blame God for the foolishness of human actions.
–John N. Clayton © 2018

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How Many Bugs Are in Your Home?

How Many Bugs Are in Your Home?
Would you like to guess how many bugs are in your home? In the fall of 2017 researchers from the California Academy of Sciences published a survey of the bugs in 50 homes in and around Raleigh, North Carolina. The researchers took 10,000 samples from basements, bedrooms, kitchens, and attics. They identified 579 species from the 304 families of arthropods known to science. Arthropods include insects, mites and, spiders.

The researchers found ants, carpet beetles, gall midges, and cobweb spiders in 100% of the homes. In many of the houses, they found booklice, dark-winged fungus gnats, cellar spiders, scuttle flies, and dust mites. Misha Leong who was the lead author of the study says that most homes contain hundreds if not thousands of individual arthropods.

It is interesting that as people move toward buying organic and buying in bulk, they are increasing the bugs in their homes. Indian meal moths, for example, can contaminate oatmeal or chew through a sweater. They lay eggs in our food and closets, and the larvae chew through packaging leaving a mess of silk and frass (waste) behind. If we use the food quickly enough we eat the eggs, and since they don’t hurt us, we don’t even know they are there.

The reality is that we have and will always have lots of bugs in our homes. Many of them are beneficial to us. Booklice, for example, eat fungi and mold. Spiders eat insects and other harmful agents including flies and mosquitoes. Harmful spiders like the black widow and brown recluse are rare. Studies have also shown that many of our chronic diseases are related to our failure to be exposed to biological diversity. Leong says, “Rooms with more kinds of arthropods may be healthier rooms.”

God did not place us in a sterile world. The more we learn of what we live with each day, the more we realize the complexity of life. Living with bugs is essential to our long-term survival. How many bugs are in your home?
–John N. Clayton © 2018

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Genesis 1:1 and the Creation Week

Genesis 1:1 and Zion Canyon
Because it was not God’s purpose to give details of the creation of the universe, Genesis 1:1 covers it in one sentence. “Reshith Elohim bara shamayan erets.” Those are the Hebrew words translated: “In the beginning, God created the heavens and the earth.” This is a historical statement which says there was a beginning to everything in space and on Earth. Those few words tell us that God was the cause of the creation. The creation included a planet with everything that we would need to exist and flourish–carbon, oxygen, water, coal, oil, nitrates, etc. “Erets” refers to a functional planet–not to a blob of gook.

As we drove through the canyonlands last month (see earlier posts), we saw how God prepared the Earth and the physical, chemical, and biological agents He used. It is interesting to see that dinosaurs, as well as many microscopic forms of life, were the gardeners who allowed all of this to happen. Without dinosaurs, there would have been no agents to process the giant plants of that day and spread their seeds. Without tiny diatoms, there would have been no agents present to form the oil and other fossil fuels that we need. Notice that Genesis 1:1 is untimed and undated! How long did it take? When did it happen? The Bible doesn’t say.

In Genesis 1:2 we see that the earth needed to be formed. The word translated “earth” is the same Hebrew word “erets” found in verse 1. This second usage is clearly different, however, because Genesis 1:9-10 indicates that God separated this earth from the water, meaning that it refers to the earth people live on, not planet Earth.

In the following verses of Genesis, the “days” of the “creation week” give specific explanations of the origin of the plants, water creatures, cattle, goats, sheep, chickens, and ducks the ancient Israelites knew. Each Hebrew word refers to known and domesticated animals, not unknown animals. Days are used to provide continuity to the sequence in which God created life. How long those days were, whether they were consecutive or had long time-periods between them can be debated endlessly.

The fact is that the first verse describes the creation made by God with the things humans would need to survive on Earth. As we said, that first verse is untimed and undated. All of the studies of geologists and biologist as to how those resources were produced are covered in that one verse of Genesis 1:1. The creation week is a description of the actual production of humans and their domesticated animals.

On our trip into the canyonlands, we saw the power, wisdom, and planning God used to allow us to exist. Proverbs 8 presents wisdom as the causal agent of creation–not blind mechanistic chance. Theological claims that create conflict between God’s word and the display of His wisdom and design are due to human error, not to the Creator.
–John N. Clayton © 2018

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Conflict Between Scientific Evidence and the Bible

Conflict Between Scientific Evidence and the Bible- Petrified Forest
For the past two days, we have been reviewing some of the things we saw and learned on the Canyonlands Educational Tour of last month. We explained our approach to the physical evidence of creation and all of the Scriptures that tell what happened. We say that the two sources must agree. If the same God who gave us the Bible also did the creating, they cannot disagree. If there seems to be a conflict between scientific evidence and the Bible, we either have bad science or bad theology or both. And there has been plenty of both.

There has been great conflict between the physical evidence that the Earth is very old and denominational interpretations of the Bible’s creation week. As we visit the Grand Canyon, Bryce Canyon, Zion National Park, the Painted Desert, and the Petrified Forest, the massive amount of evidence that the Earth is much more than 6,000 years old becomes obvious. So how do we resolve this apparent conflict between scientific evidence and the Bible? If we are not locked into those denominational belief systems, we can take the Bible literally. By that we mean, look at who wrote it, to whom they wrote it, why they wrote it, and how the people it was written to would have understood it.

Genesis was written in the style of Hebrew poetry to all of humanity–those living in the days of Moses as well as those living in the 21st century. We cannot expect the account to deal with quantum mechanics, because the people of Moses’ day would not have understood it. The animals described in Genesis are animals that people of Moses’ day would know. Don’t look for duckbilled platypuses, echidnas, penguins, or dinosaurs in the Genesis account. Don’t look for descriptions of stellar production of heavy elements or evolution of stars or even continental drift.

We could list hundreds of things that you would not expect in the biblical account because the ancient Israelites would have no way to understand them. Furthermore, there would be no reason to give such details, and the Bible would be too heavy to carry. For that reason, the Bible begins with the single sentence: “In the beginning, God created the heavens and the earth.” That sentence prepares the reader for a simplified description of the actual production of humans and their domesticated animals on the planet we call home. There is no conflict between scientific evidence and the Bible when taken literally. We will have more on that tomorrow.
–John N. Clayton

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God’s Engineering Skills

God's Engineering Skills at Sunset Crater
Yesterday we began to tell you about last month’s Canyonlands Educational Tour. It was a week of learning about how God works. In the canyonlands area, we can see God’s engineering skills.

Our trip was a bus tour with 50 people participating. We departed from Flagstaff, Arizona. That area allows us to study the basic rocks from which all other rocks were made, and that is volcanic material. Our analysis of elements in space and the minerals in Earth’s crust show us that all rocks are made of materials found in the interior of the Earth. For example, granite is made up of quartz which breaks down into sand and makes sandstone. Orthoclase is another constituent of granite, and it weathers to produce clay which is a major part of shale. Visiting Sunset Crater (pictured) and seeing the volcanic mountains surrounding Flagstaff allows us to understand the method by which God produced all other rocks.

In the first session of our trip on Sunday evening, before we departed, we pointed out the one basic assumption that underlies our entire trip. That assumption is that God is not a magician who does everything by slight of hand and magic. We see God’s engineering skills as He uses natural processes to produce things in the creation. The Bible tells us that “God planted a garden” (Genesis 2:8) not that He waved a magic wand and a garden appeared. When God created man’s body in Genesis 2:7, he “formed man of the dust of the earth.” The Hebrew word used to describe that process is yatshir which is a word denoting something an artist might do in creating a work of pottery from clay.

God did not “zap” the Grand Canyon into existence with all its many kinds of rocks and embedded fossils. Many religious people want to have God “speaking” these things into existence. The Bible indicates that God commanded the creation elements indicating that other agents were doing the actual work. In our twenty-first century mentality of rejecting scams and con-artists, it is important not to put God into the role of being a trickster. God did His creating process in such a way that we can discover the processes. That is the reason the Bible says we can “know God exists through the things He has made” (Romans 1:20). In Proverbs 8, wisdom personified speaks of God’s engineering skills.

We see the evidence of God’s engineering skills in the creation processes, and we read the Scriptures that tell what happened. Our approach to all of the evidence and the Scriptures is that they MUST agree. If the same God who gave us the Bible also did the creating, they cannot disagree. If there seems to be a conflict between the scientific evidence and what the Bible says, we either have bad science or bad theology or both. There has been plenty of both.

Tomorrow, we will continue to examine more of the things we saw of God’s engineering skills during our week in the canyonlands.
–John N. Clayton © 2018