For almost 2000 years, from ancient Greece to the nineteenth-century, the most common procedure performed by surgeons was bloodletting. The doctors would cut the patient to allow blood to drain because they thought this would drain disease from the body. In truth, if it didn’t kill the patients, bloodletting at least left them weaker. The medical establishment didn’t realize that life is in the blood.
Even though William Harvey disproved the effectiveness of bloodletting in 1628, doctors (and barbers) still practiced it for another 200 years. It can take a long time for false ideas to be abandoned, even by doctors and scientists. In some areas such as China and the Middle East, people still practice a form of bloodletting today known as hijama or cupping.
While they were still practicing bloodletting, doctors began to experiment with blood transfusions. Early experiments in the seventeenth-century involved transfusions of animal blood into humans, usually with disastrous results. Doctors didn’t realize that there are different blood types among humans and even among animals. Different blood types have a different molecular structure in the red blood cells. If a patient is given blood of the wrong type, it can cause a reaction that can be fatal, because the patient’s immune system attacks the foreign blood cells as invaders.
In 1901 Karl Landsteiner found that mixing blood from different patients sometimes caused clotting. This led him to classify blood into three types—A, B, and O. Scientists have discovered more blood groups since then, making transfusions much safer today.
If those who practiced bloodletting had paid more attention to the Bible, they might have realized much sooner that it was a bad idea. “The life of every creature is in the blood” is stated twice in Leviticus 17 verses 11 and 14. With that admonition, God commanded the ancient Israelites to refrain from eating blood and to sacrifice the blood of animals to cover their sins. But the final redemption for sins came when “God presented Christ as a sacrifice of atonement, through the shedding of his blood” (Romans 3:25). Life is in the blood, and eternal life is in the blood of Christ.
It’s 2.5 billion light-years away, and brighter than the over 100 billion stars in our Milky Way Galaxy combined. If it were even as close as 30 light-years from us, it would appear as bright as the Sun, which is only eight light minutes away. Before anyone ever saw it, scientists detected it by the radio waves that it sends out.
In 1963, astronomer Allan Sandage was the first to observe quasar 3C 273 with a telescope. Quasars are the brightest objects in the known universe. They’re massive discs of particles that surround a supermassive black hole at the center of a galaxy. They emit intensely powerful energy as the black hole sucks the life out of matter and pulls it into its abyss. The energy is brighter than 100 billion stars.
The cloudy streak in the picture from NASA’s Hubble Wide Field and Planetary Camera 2 is a jet of energy that was fired off by the quasar at some time in the past. That streak is 200,000 light-years long! It would be impossible to survive in a galaxy with a quasar in its center. The intense energy from the quasar would destroy life while the black hole devoured the matter. We can be thankful that this quasar is so far away, even though it is one of the nearest.
Life on Earth is possible because we have no black holes or quasars near us. We think the universe reveals the work of an amazing Master Designer. We agree with Dr. Allan Sandage, the first person to observe a quasar, when he said, “Science makes explicit the quite incredible natural order, the interconnections at many levels between the laws of physics…Why is the design that we see everywhere so truly miraculous?… As I said before, the world is too complicated in all its parts and interconnections to be due to chance alone.”
Bacteria are single-cell microorganisms that we do not think of as having social behavior. However, scientists are studying Myxococcus xanthus bacteria working together. They are rod-shaped bacteria that live in the soil and organize into structures of thousands of cells to hunt food or to survive when food is not available.
Myxococcus xanthus bacteria are predators that eat other microbes. When they organize into 3-D structures, they can be visible to the naked eye. In this complex form, they swarm toward their prey in a single mass of bacteria working together in “ripples.” You can see them on the left side of the picture.
To capture their food, the swarms of Myxococcus xanthus microbes secrete enzymes that kill and digest the prey and then take in their nutrients. These predator bacteria hunt together because individually they can’t produce enough of the antibiotics to kill the prey, but together they are deadly to other microbes.
When there is a food shortage, scientists still find these bacteria working together to survive. They form a structure called “fruiting bodies” as pictured on the right. In that form, they can survive for years if necessary. As single cells, they would not survive.
Studying how these microbes work can help scientists design new antibiotics or pest-resistant seeds for agriculture. Myxococcus xanthus rods are alive and can crawl, so their movement applies the laws of physics and the biological laws that govern living things. Studying these bacteria may help materials scientists gain new ideas for constructing liquid crystal display screens in electronic devices.
We learn much by looking at what is functional in the natural world. A wonder-working hand has moved before us and gives us tools for developing new materials to improve our lives. Also, bacteria working together can serve as a lesson to remind us that humans can accomplish more when we work together.
The media often overlook how many things have to be “right” for life to exist on a planet. Planetary atmospheric pressure is one factor.
By “life,” we mean the standard textbook definition of organisms that can move, breathe, respond to outside stimuli, and reproduce. The problem is that many conditions make other terrestrial planets (planets with hard surfaces) unlikely to harbor life. Life is even less likely on Jovian planets that are primarily gaseous. You can postulate balloon-like living organisms in Jupiter or Saturn’s atmosphere, but radiation and electrical problems make that unlikely as well.
Planetary atmospheric pressure depends on the weight of the gases above a planet’s surface. The air pressure on Earth’s surface is 14.696 pounds per square inch a sea level. That pressure allows water to exist as a liquid, and it will enable various gases to dissolve in the water. We all know what happens when you shake a bottle of carbonated beverage and then quickly remove the cap. The sudden drop in pressure causes an explosion as the dissolved carbon dioxide escapes from the liquid. For organisms to absorb oxygen dissolved in water, which fish do, the atmospheric pressure must be high enough for the oxygen to dissolve. The atmospheric pressure on the surface of Mars is .01 of the pressure on Earth. That means water on Mars would contain no oxygen or dissolved gases.
There has been discussion about finding water on the Moon or Mercury, but those atmospheric pressures are considerably lower than those on Mars. That means water would not be in a liquid state. On the other end of the pressure spectrum is Venus, where atmospheric pressure 92 times greater than on Earth. At that pressure, toxic gases would be dissolved in any water that existed on the planet.
Planetary atmospheric pressure is just one more variable that must be carefully and precisely chosen when constructing an environment that will support and sustain life. The creation is far more complicated than most of us realize. As we learn more, we must stand in awe of the God who created our planet.
Every time we get a better view of outer space, a new mystery steps forward. In 2015 a spacecraft called New Horizons went past Pluto and raced into outer space. The computers onboard the spacecraft were programmed to block out all light from known objects in the Milky Way galaxy. You would expect that if no light from stars or galaxies could get into the light measuring devices on New Horizons, it would measure only total and complete darkness. Instead, what New Horizons told us is that outer space is not dark but incredibly brilliant.
Outer space has an amount of light equivalent to the light from all the known galaxies in space! Tod Lauer, a spokesperson for the National Optical-Infrared Astronomy Research Laboratory in Tucson, says, “There’s something out there unknown.” The most likely scenario for this unexplained light is that there are still more galaxies and stars or clusters of stars beyond the reach of our telescopes, illuminating the distant clouds of matter.
Astronomers have said that the size of the cosmos is not only larger than we can describe with our known science and mathematics, but it is also larger than we can imagine. David wrote in Psalms 139:7-12, “Where can I go from your Spirit? Where can I flee from your presence? If I go up to the heavens, you are there. If I make my bed in the depths, you are there. … If I say ‘Surely the darkness will hide me, and the light become night around me,’ even the darkness will not be dark to you, the night will shine like the day, for darkness is as light to you…”
A skeptic recently complained that mountains are a mistake. “They block travel, cause avalanches, create deserts, and are just a general nuisance. If God were the creator, He wouldn’t have made these huge obstacles to human well-being.” In response to this skeptic, we consider, “Why do we need mountains?” For one thing, mountains are a very practical solution to one of humanity’s greatest needs–water.
In a basic geography or meteorology class, we learn about orographic uplift and rain shadows. As air comes across a flat area, it picks up moisture. But to make rain, there must be more than just water. Condensation requires a cool enough temperature and nuclei on which the water vapor can condense. Mountains provide both the cooler temperatures and the condensation nuclei.
As air pushes up the side of a mountain, it cools, and stirred-up dust provides condensation nuclei. For that reason, it is frequently very rainy on the windward side of the mountain. On the other side, the air is dry because all of the moisture has been removed.
Mountains can also capture and store water as ice and snow.Scientific American (January 2021) published an article with data on how many people get their water from the mountains. There are 78 regional mountain chains or “water towers” that deliver water to almost two billion people and surrounding ecosystems. Without mountains, the amount of land that would be hospitable to humans would be much more limited.
In addition to mountains capturing and storing water, they have also created underground aquifers. Glaciers generated in mountain areas have carved out huge valleys, depositing sand and gravel in permeable layers that allow massive amounts of water to seep into the ground. Here in southern Michigan, continental glaciers produced aquifers that supply us with water. In a large area of the Midwest United States, an underground aquifer called the Teays River has supplied adequate water for agriculture.
God has provided a massive and effective water system for nearly all continents, primarily because of mountains. Why do we need mountains? We need them for the water that allows irrigation as well as drinking and other uses. Mountains are beautiful, they provide recreational activities for humans, and they literally water the world for human survival.
One of the most exciting experiments conducted on the Space Station has been the twin study in space. Mark and Scott Kelly are identical twins, and both are astronauts. Scott lived aboard the International Space Station for a year. Mark remained on Earth and lived his normal lifestyle. Both men took daily blood and urine samples so that scientists could evaluate any changes caused by living in space.
Life aboard the space station is very regimented and very different from Scott’s previous life on Earth. On the Space Station, fluids swelled around Scott’s upper body and head, his immune system worked overtime, and his metabolism was altered. Of greatest interest to scientists was that Scott’s genetic makeup – his DNA – had been damaged.
There are protective structures called “telomeres” at the ends of our chromosomes. These structures get shorter with age and put the person more at risk for age-related illnesses. In Scott’s case, the telomeres temporarily lengthened and then became shorter. This means that space flight could put the body at risk for age-related conditions such as heart disease and cancer.
What conclusion can we draw from the data of the twin study in space? First, the human body was designed for living on planet Earth. Even a small change in environmental characteristics can make genetic changes that can be detrimental to human health.
The study of insects continues to find design features that enable them to survive when it seems their enemies should wipe them out. The numerous ant species have a variety of defense mechanisms. Entomologists at the University of Wisconsin have discovered ant armor for leafcutter ants.
Leafcutter ants are small and must protect themselves from larger predatory ants. Researchers found that they have a tough coat of mineral armor. Entomologists studying Acromyrmex echinatior worker ants found that their exoskeleton has a thin white protective coating. After trying various methods to remove that mysterious layer, researchers discovered that it is calcite with high magnesium levels.
The thin protective layer, only 7% of the exoskeleton’s thickness, more than doubles the leafcutter ant’s hardness. When larger soldier ants of another species attacked, they were not able to kill the leaf cutterants.
Ant armor for leafcutter ants is similar to the mineral protection that crabs and other crustaceans have, but scientists had not discovered it in ants before. How did these ants get this protection? Researchers theorize that external microbes the ants carry are responsible. That means this is another example of symbiosis between species–another evidence of design. The scientist leading this study said that learning how this tough coating forms could help technicians develop protective coatings for various products.
It seems that God has given every species of life on this planet protection against their natural enemies. Not only must all lifeforms have a ready supply of food and adequate water, but they must have physical protection. Ant armor for leafcutter ants is only one example of God’s intricate design for life.
On September 28, 1969, a meteorite fell near Murchison, Victoria, Australia. When scientists studied the meteorite, they found amino acids, which are the basic building blocks of proteins. In 1971, researchers reported that the Murchison meteorite’s amino acids were primarily glycine. Recent studies of the comet 67P/Churyumov-Gerasimenko have also detected glycine. Other studies of space materials have revealed that nucleobases and sugars exist in outer space. These studies indicate that there are life chemicals in space, but it is essential to understand that these compounds are not life.
The media has used headlines to suggest that science has found life in outer space. That is not the case. We have learned that there are life chemicals in space, but not life. These compounds are the key components of DNA and RNA, and that means that if there is life elsewhere, it will be made of the same stuff that we are made of. Claims of exotic forms of life existing all over the cosmos are exaggerations and not supported by the evidence. However, it is possible that God has not limited life to planet Earth. To travel throughout the cosmos, we may need to use the life chemicals available in space.
When Jesus gave the Great Commission, He said to take the gospel to the “kosmos.” From that Greek word, we get the English word “cosmos.” Carl Sagan said, “The Cosmos is all that is or ever was or ever will be.” You can find “kosmos” used in Matthew 24:21 and 25:34 and Mark 14:9 and 16:15. The Greek word “aion” is used elsewhere in Matthew, Mark, and Luke when referring to a habitable planet.
Jesus said to preach the gospel to every creature wherever they can be found. If I were to meet a sentient alien life form that could understand my speech, I would want to tell them about Jesus Christ. Hearing Christ’s teaching and the wisdom and power of God would improve the existence of any being who heard it.
An exciting area of study is the way various animals protect themselves against would-be predators. We find one of the most unusual methods in the African crested rat (Lophiomys imhausi), also known as the maned rat. It’s the world’s only poisonous rodent.
Crested rats have a white-bordered mane that extends from the top of the head to the base of the tail. Their body can be up to 14 inches (360 mm) long, or 21 inches (530 mm) if you include the tail. They would make a very nice meal for a wild dog or hyena if they didn’t have a poison defense system. Crested rats chew the bark of the poison arrow tree (Acokanthera schimperi). They spit out the chewed matter and rub it on the coarse fur of their mane. When threatened, the rat’s mane stands erect, so the poison is the first thing a predator will contact. The toxin is strong enough to kill a wild dog or hyena.
Researchers studying crested rats report that their behavior demonstrates that they are aware of their poisonous nature. It seems to be built into the DNA of these animals to know how to secure the toxin. Animals such as skunks produce their own noxious chemicals for defense, but they are not poisonous. Scientists have not found any other mammal that collects poison from a plant species and stores it for protection. Crested rats depend on the poison arrow tree and don’t seem to be harmed by the poison.
How does the world’s only poisonous rodent develop such a tool for survival? We see God’s design over and over in animal behavior and the tools that they know how to use.