Smalltooth Sawfish “Pocket Protector”

Smalltooth Sawfish “Pocket Protector”

An interesting creature lives in the ocean off southern Florida and the Bahamas. The smalltooth sawfish (Pristis pectinata) is a member of the ray family with a snout lined with needle-sharp teeth that it can use to cut vegetation or chop up a predator that gets too close. The amazing thing about this fish is that the babies are live-born. The question is how can a baby sawfish avoid cutting up its mother or siblings before birth.

The answer to that question has come from researchers at the Florida Fish and Wildlife Conservation Commission in Charlotte Harbor. They found that the baby sawfish’s teeth are housed in a sheath during its life inside the mother. It’s essentially a second skin that the smalltooth sawfish sheds about four days after birth. The researchers say the sheath feels like paraffin wax, which you can’t peel off, but with a slight give. The chemical composition of the sheath shows that it has two layers made of proteins similar to ordinary skin.

The ocean is full of living things with incredibly complex and specialized designs, enabling them to exist in unique environments. The lead researcher, Gregg Poulakis, said, “It’s a cool thing Mother Nature figured out to protect mom from those calcified teeth and protect siblings from sword fighting in the uterus.” Trying to explain such design by gradual evolution requires intermediate steps leading to the design features we see today. Those intermediate steps do not exist.

Every discovery speaks of an intelligence that filled in ecological niches and survival techniques like what we see in the sawfish. Romans 1:20 tells us that we can know God exists through the things He has made. The number of examples of cases like the smalltooth sawfish continues to grow as science learns more about the complexity of the world in which we live.

— John N. Clayton © 2024

Reference: Science News magazine for July 13, 2024, page 5 and sciencenews.org

Baobab Trees – Tree of Life

Baobab Trees - Tree of Life

Fossil evidence of ancient trees known as baobabs found in Madagascar shows that they are among Earth’s oldest life forms. This genus, known as Adansonia, has eight species in Madagascar, Africa, and northwest Australia. People call them the “upside down trees” because of their shape. The nickname “tree of life” comes from the fact that they can live for thousands of years and grow to huge sizes.

The fruits of baobab trees are a superfood, and people use their trunks to make fibers for rope or clothing. The baobab’s large white flowers open at dusk, attracting bats as pollinators. The branches of the trees are nesting sites for birds. These trees look very different from modern trees. They have a pyramid shape with a large trunk that stores huge amounts of water and no limbs or leaves except at the top. They might remind you of a giant toadstool, but the shape is ideal for storing water and the safety of bats and birds.

DNA studies show a starting point for baobab trees in Madagascar, tracking their journey on ocean currents to Australia and Africa, where local conditions shaped them into what we see today. Scientific data shows no connection between baobabs and gymnosperms like pine trees and modern trees like oaks and palms.

Attention has been drawn to the fact that baobab trees are so useful that they are being overharvested. Genesis 2:9 tells us that “God made all kinds of trees that were pleasing to the eye and good for food.” The diversity we see in creation speaks of an intelligent purpose for plants, and everywhere we look, we see the benefits plants provide. Baobabs remind us that we live in a very special place, and we must not let greed, ignorance, and selfishness destroy what God has given us.

— John N. Clayton © 2024

Reference: BBC News for May 15, 2024, and the journal Nature.

Solar Storm on Mars

Solar Storm on Mars

A massive solar storm on Mars occurred on May 20, 2024, shortly after it caused impressive auroras on Earth. This latest storm is part of the normal eleven-year cycle of solar maximums, but it is the first time such a storm has occurred while astronomers have the equipment to record its effect.

Xrays and gamma rays, which travel at the speed of light, reached Mars first and were followed minutes later by charged particles. According to NASA, the Curiosity rover at Gale Crater near the Martian equator took pictures showing white streaks resembling snow but were actually charged particles. The radiation from the solar particles was so intense that the star camera aboard the Mars Odyssey orbiter temporarily shut down.

Curiosity rover’s measurements of the radiation reaching Mars’ surface show that an astronaut standing next to the detector would get radiation equal to 30 chest X-rays. Earth has a strong magnetic field to shield it from energized solar particles, but Mars does not. At the same time, the thin Martian atmosphere could not give protection from the solar storm on Mars.

Planets with a functional atmosphere and located in the Goldilocks Zone, where liquid water on the surface is possible, are rare. All stars go through cycles that pose threats to life on their orbital planets. Mars, a potential target for human visitation and a place where people speculated that life might exist, has received significant attention. This new data from a common solar event suggests that conditions for life to exist are even more challenging than previously thought.

The message of the solar storm on Mars and discoveries like this is important. They tell us that Earth’s creation and the life on it are the product of intelligence and design, not opportunistic chance. They also tell us we must take care of the Earth because, in reality, there is no other place to go if we mess up this planet.

— John N. Clayton © 2024

Reference: CNN Reports on Space Science for June 14, 2024.

Trout Fins Are Designed for Efficient Swimming

Trout Fins Are Designed for Efficient Swimming
Rainbow Trout

Technology has allowed us to see the design of things in the natural world. Dr. Haibo Dong at the University of Virginia has used 3D computer models to study the turbulence created with each fin of a trout. American Scientist magazine states, “Interactions between swirling eddies created by a swimming trout show how its body is optimally laid out for energy-efficient movement.” Trout fins are designed for efficient swimming.

A trout’s body is shaped to swim through the water with less drag than any other shape. However, the role of various fins is not easy to see. Virtually all fish have a dorsal fin on the back and a caudal fin on the tail. Trout have other fins, including pectoral fins near their heads and pelvic fins near the center of their bellies. Toward the back of the trout’s body is a small adipose fin on top and an anal fin on the underside. The researchers have shown that the fin locations increase the thrust the tail produces. The anal fin produces 8.6% more thrust reducing the drag by 18.6%. Trout fins are designed for efficient swimming, or as the researchers conclude, “the whole trout is optimized for efficient swimming.”

Other fish have different fin arrangements to match their survival needs. A tuna living in the open ocean has a different layout of fins because it is designed for speed rather than efficiency. Fish that confine their existence to the bottom of a lake or river will not have the same fin layout as the tuna or the trout. For example, catfish have a fin arrangement designed for protection. Those of us who have grabbed a catfish incorrectly may have suffered a painful jab from its fins. Trout fins are designed for efficient swimming since they make long migrations, swimming upstream and sometimes over waterfalls.

Our technology allows us to understand the various designs seen in living things. Trout fishermen know that catching a trout differs from catching any other fish because of their mobility and muscular nature. Research has shown that the trout’s design shows wisdom right down to the shape and location of its fins. We suggest that this design is the product of a Designer, not just blind opportunistic chance. Genesis 1:21 tells us, “God created the great creatures of the sea and every living and moving thing with which the water teems..” Thanks to technology, we understand how over-simplified that statement is.

— John N. Clayton © 2024

Reference: “Fins Working Together” in American Scientist magazine for July-August 2024, pages 204-206.

Just Right for Life to Exist

Just Right for Life to Exist

Since astronomers have discovered more than 5,000 exoplanets orbiting stars other than our Sun, many insist there must be life elsewhere in the cosmos. For those of us who believe in God, that isn’t really an issue. If there is life out there, God created it, but the Bible only speaks to our planet. However, the evidence is growing that our planet is more unique than most people realize. A “Goldilocks” planet is at the proper distance from its star so that the temperature is “just right” for liquid water to exist on the surface. Some exoplanets appear to be in the habitable zones of their stars, but many other factors must also be just right for life to exist there.

Most known exoplanets are like Jupiter, having no terrestrial surface. To support life, a planet must be the right size, have a stable orbit inside the habitable zone of a stable star, and have the right atmosphere. It must also have working plate tectonics and a large moon to maintain a stable axis tilt. To be just right for life to exist, a planet must also be in the habitable zone of its galaxy – not near the center, exposing it to lethal gamma-ray bursts.

Our Sun is a G spectral star, but only 9% of the stars in our galaxy are that type. M-class dwarf stars are the most common and long-lived stars, but they emit large amounts of radiation that would cook any life on their planets. Also, planets around such a star would become tidal-locked, with one side facing the star being excessively hot while the other remains cold.

Another star system requirement for life would be having outer planets large enough and in the correct position to sweep away asteroids and comets that would bombard an inner planet. To support life, a planet also needs a strong magnetic field to shield the surface from the star’s radiation and cosmic rays.

Our Earth is just right for life to exist. We are defining life as the biology books do: being able to move, breathe, respond to outside stimuli, and reproduce. Any conjecture about fire people or rock people is in science fiction – not scientific fact. The bottom line is that Earth is a special place created by God for a special purpose and is unique among all other objects in the cosmos.

— John N. Clayton © 2024

Reference: “Is Earth the Only Goldilocks Panet?” in Discover magazine, July/August 2024, pages 54 -57.

Firefly Frequencies at Work

Firefly Frequencies at Work

There are 56 species of flying lightning bugs, or fireflies, and each emits light of a different frequency. The different firefly frequencies cause different colors, such as green, yellow, or red, but science has found that the frequencies are far more precise than the color. The fact that each species has a particular wavelength allows fireflies to find mates, even in an area where other life forms use bioluminescence.

Fireflies have four stages. They begin as eggs but spend most of their 61-day existence as larvae, eating snails, slugs, and worms. They have a pupa stage just before becoming adults. Bioluminescence serves mainly as a way for males and females to find each other, and having the right frequency is essential in that process. Research is continuing on how the frequencies are specified, but 56 species means that the frequency variation has to be carefully created and controlled.

Most living things have methods of communication that serve multiple purposes. Communication allowing males and females to find each other is always risky because it exposes them to predators. Because fireflies’ flashing is sporadic and not a steady glow, they are less likely to be eaten. If you have tried to catch these flying lightning bugs, you know how hard it is because they flash and run, making them hard to locate.

We can learn many things by studying the natrual world, including the chemistry that allows various firefly frequencies of bioluminescence. In the firefly we see another demonstration of God’s wisdom and intelligence.

Reference: PBS “Nature” program on May 16, 2024.

Animal Memory Capacity

Animal Memory Capacity in Clark's nutcracker
Clark’s Nutcracker

One of the most interesting areas of study in living things is animal memory capacity. Memory is designed into animals to benefit both them and other forms of life in their ecosystem. We see a good example of partial memory in squirrels who bury massive numbers of seeds, such as acorns, but only remember where they put a fraction of them. What that means is that the squirrels have enough to eat, but they plant trees over a huge geographic area. There are many forms of life where partial memory serves a similar purpose.

On the other hand, some life forms remember virtually 100%. A good example of this is Clark’s Nutcrackers. They survive on pinion seeds, and a single bird may hide as many as 30,000 seeds, placing 4 or 5 seeds in each spot. Throughout the winter, the Nutcracker, when hungry, will return to each hiding place to get food. By the time spring arrives, this bird will have consumed almost all of the seeds hidden in thousands of different places.

It is interesting that different forms of life have different memory capacities that benefit not only themselves but also their environment. You could compare it to thumb drives for your computer, having different memory capacities depending on the thumb drive’s design. God has placed different storage in the memory of the brain of each creature He created. In humans, that storage capacity is huge and can be accessed in many ways. In the animal world, there is an interaction with the environment that is beneficial to the animals and the environment.

Trying to explain this animal memory capacity by evolutionary reasoning is incredibly difficult and is full of assumptions. Those of us who believe in God as the creator understand why this kind of thing occurs over and over. It speaks of God and His wisdom and design in the world around us.

— John N. Clayton © 2024

Reference: Our Fascinating Earth: Strange, True Stories of Nature’s Oddities, Bizarre Phenomena, and Scientific Curiosities by Dr. Philip Seff, Ph.D.

One of the Natural World’s Most Amazing Things

One of the Natural Worlds Most Amazing Things

The hummingbird is one of the natural world’s most amazing things. Researchers have compiled new hummingbird data using modern methods, including high-speed photography. An adult hummingbird weighs roughly 4 grams, and to get a handle on that, a penny weighs about 2.5 grams. There are 21 species of hummingbirds in North America, and one species, called the bee hummingbird, weighs less than a penny.

Hummingbirds don’t beat their wings as most birds do; instead, they rotate them in a figure-eight pattern. That allows them to hover and fly backward or even upside down. The rate of wing motion is up to 80 cycles per second. That is within the range of human hearing and explains the humming sound that gives these birds their name. The metabolic rates of hummingbirds are amazing, as their heart rate is around 1,260 beats, and their breathing rate is 250 breaths per minute. These rapid rates mean hummingbirds may find a place to rest as often as every 15 minutes.

One of the natural world’s most amazing things is that hummingbirds can travel non-stop across the Gulf of Mexico in spring and autumn. Before embarking on that trip, they double their body weight with nectar and insects. When the temperature is low, they go into hypothermic torpor to survive.

The hummingbird’s eyes have a dense concentration of cones in their retinas containing pigments that act as filters to heighten color sensitivity to red while muting blue. Pollination is a major purpose of hummingbirds. Ruby-throated hummingbirds deposit ten times as much pollen as bumblebees, and their life expectancy is 3 to 6 years.

It is with great joy that I watch hummingbirds come to the feeder outside my office window. Their various characteristics speak of the wonder of God’s creation, defying chance explanation. Once again, we “can know there is a God through the things He has made” (Romans 1:20). The hummingbird is one of the natural world’s most amazing things.

— John N. Clayton © 2024

Reference: “Fascinating Hummingbird Facts” by Tom Warren on Almanac.com

Brown Bats and Tiger Beetles

Brown Bats and Tiger Beetles
Tiger Beetle Cicindela oregona in Arizona desert

One of the challenges in the natural world is keeping a balance between predators and victims. If predators have a foolproof method of locating their prey, they will eventually wipe out their food population, and the predators will die. That means victims must have some method of avoiding predation. Harlan Gough, a conservation entomologist at the U.S. Fish and Wildlife Service, has done some amazing experiments with brown bats and tiger beetles.

When Gough placed brown bats and tiger beetles into a cage together, the bats ate all of the tiger beetles. In the wild, this doesn’t happen because tiger beetles have a way of mimicking an insect known as a tiger moth. Tiger moths live in the same areas as tiger beetles, but bats don’t eat them because they have a foul taste. Dr. Gough found that tiger beetles can emit the same clicks as tiger moths when they sense predatory bats. They pull their forewings into the path of their beating hind wings, creating a high-pitched click similar to the tiger moth’s sound.

In the natural world, all living things have one or more methods to avoid predators. It may be smell or sight, but this may be the first case of using sound to deter predation. Realize that all of this happens at night when ultrasonics are more useful than sight and smell. No prey survival methods are 100% sure, so predators can still survive, especially when the food source is injured or sick.

We suggest that this case of brown bats and tiger beetles is another instance where there are too many variables to assign to chance. Having tiger moths with bad taste living in the same Arizona desert with tiger beetles seems more likely to be a planned and designed system than a series of accidents. The statement in Romans 1:20 that “we can know there is a God through the things He has made” seems to be supported again as we learn more about the functioning of the natural world.

— John N. Clayton © 2024

Reference: Science News, June 15, 2024, page 11.

Qiviut Fiber and the Muskox

Qiviut Fiber and the Muskox
Muskox Herd

One of Earth’s warmest, finest, and rarest fibers is not produced by humans. Qiviut is the Inuit language name for the coat of the muskox, which is native to Alaska. Muskox qiviut fiber is lightweight but stronger and warmer than sheep wool. The muskox wears its two-inch-thick coat throughout the winter and sheds it in the spring. Researchers are making a major effort to create a synthetic fiber that is even close to what the muskox produces.

Muskox inhabit the tundra of northern Alaska, where winter temperatures drop far below zero, and the wind is constant and substantial. Most animals migrate to warmer areas or hunker down into dormancy to wait out the cold tundra weather. The muskox will paw through the snow to reach moss lichen, willows, and roots while ignoring the typical blizzard conditions.

Alaskan farmers raise herds of muskox and ship qiviut to a mill that spins it into yarn. Qiviut is a challenge to spin because it has a tiny diameter, short staple length, and is smooth and slippery. Sheep wool is coarse with deep interlocking scales, making sheep wool yarn strong, but it also causes shrinkage, felting, and scratchiness. Qiviut is sometimes blended with silk.

Interestingly, human work with fibers of all kinds for thousands of years has not come close to the qiviut fiber of the muskox. God’s design of materials for every type of climate and condition speaks loudly of His wisdom and design. The muskox is an excellent example of fiber design not seen in any other life form on our planet.

— John N. Clayton © 2024

Reference: Alaska Magazine for July/August 2024 pages 64-67.