Diversity of Life on Earth

Diversity of Life on Earth

We read reports of scientific research from all over the globe. Scientists are discovering how various forms of life exist on this planet. There is a diversity of life on Earth, even in environments where you wouldn’t expect life to survive.

One such environment is in the deepest part of the ocean, where animals must live in total darkness. The design that enables them to survive with no light from the Sun or Moon is bioluminescence. These animals generate their own light so they can find each other and locate prey. There is a whole chain of life in the darkness of the deep ocean, and we are learning that this ecosystem absorbs greenhouse gases that affect the atmosphere for land creatures.

We see this kind of balance in oceans of the past. Long ago, sea animals were large enough to maintain balance in the sea by eating tremendous quantities of food. For example, a marine reptile carnivore known as ichthyosaur was up to 66 feet (20 meters) long. When the asteroid strike wiped out the giant creatures, including the dinosaurs and ichthyosaurs, the smaller life forms survived and established a new food chain.

Scientists are discovering unique designs that enable animals to survive what would appear to be impossible conditions. For example, how can a boa constrictor breathe as it squeezes the life out of prey and ingests it? Why doesn’t the act of compression force the air out of the snake, suffocating it? The answer is that boas have 200 pairs of ribs and some of the ribs squeeze the prey while others are designed to allow the snake to breathe.

The diversity of life on Earth allows specialized equipment designed for living in any environment. Even humans are diverse. Modern pygmies are well-designed to live in a jungle environment. Fossils of a hominin named Homo naledi tell us that ancient small humans existed in environments with fewer resources. Most of what we know about them comes from a burial chamber found in a cave in South Africa.

We see the diversity of life on Earth today, even in humans able to survive in challenging environments. Racial characteristics in humans offer survival benefits in the diverse habitats of our planet, and they are not a basis for discrimination. We need to understand that diversity in animals and humans is an expression of God’s wisdom and design for life everywhere on Earth.

— John N. Clayton © 2022

References: Saturday Evening Post May/June 2022 (pages 36-39); The Week March 18 (page 21) and April 15, 2022 (page 21); USA Today and South Bend Tribune for May 2, 2022; and Archaeology for May/June 2022 (pages 9-10).

Human Evolution “The Road to Homo Sapiens”

Human Evolution “The Road to Homo Sapiens”

Around 1970, Time-Life Books published a mural of human evolution, “The Road to Homo Sapiens.” It became a monstrous success. It was a foldout in a book titled Early Man. It was also laminated and sent to teachers in public schools. This mural became the basis of several movies and even cartoons. What most people don’t realize is that it was quite inaccurate. The artists who made the drawing created the impression that it was a chronological sequence of human history. Actually, the dates were misrepresented, and the illustrations were pretty much fictional. In spite of that fact, much of the American public accepted “pliopithecus-to-modern-man” as a proven fact.

Half-a-century later, the picture is much more complicated and highly contested. Recently in Europe, scientists found older fossils of what were considered to be the earliest ancestors of modern humans. Others found fossils of a group of small-brained individuals apparently ritualistically buried in a cave complex in southern Africa. This find violated the theory that there is a relationship between brain size and human-like activities. Discovered in Indonesia is a very small hominid that supports the view that there is no relationship between brain size and humanism. Names like Homo floresiensis or Hobbits, and Homo naledi or Naledi, and Graecopithecus fill the literature today.

Debates rage among the leading anthropologists about whether brains became larger as Homo species evolved, or whether brain size came first and increased physical size came later, or whether brain size has nothing to do with evolution at all. Interestingly, some of the great geniuses of the past 100 years had very small brains.

The primary source of problems here is the failure to have a good definition of, “What is a human?” The biblical account defines humans as those beings created in the image of God. That does not refer to brain size or any physical characteristic. In reality, we have no idea what Adam looked like, how big his brain was, or any other physical characteristic.

The Bible tells us that “God formed the man of the dust of the ground, and breathed into his nostrils the breath of life; and the man became a living being” (Genesis 2:7). The Hebrew word yatsar is translated “formed.” It is a term used to refer to someone shaping pottery from clay. It’s different from the Hebrew word bara, which is used in Genesis 1:27 to indicate how humans were created in God’s image. Bara is a word used only in reference to what God can do, and that is what makes us unique. You can form a man out of plastic and put clothes on him and put him in a department store window. The body may resemble a man, but it does not have the breath of life, and it does not have a soul.

The fossil record shows us that many creatures in the past may have had some resemblance to humans. The same could be said today. You can visit a zoo and see gorillas, chimpanzees, orangutans, baboons, spider monkeys, Japanese snow monkeys, and others. The fact that there are some common features does not mean we are related.

The anthropological definition of humans deals only with physical characteristics. From the standpoint of human evolution, the road to homo sapiens is very bumpy indeed. The biblical definition of beings created in the image of God gives humans a special identification and a unique role in the world. It’s a role that has eternal significance and should also help us function in a constructive way in the affairs of this life. Humans can act like animals, but no animal can be human. Only humans are uniquely created in God’s image, now and for eternity.

–John N. Clayton © 2017

References: Science News June 10, 2017, page 6, The Week, June 23, 2017, page 20, Science News June 24, 2017, page 9.