Our eyes say it!

Compared to other primates, humans have huge ‘whites of the eyes’, or sclera. This means that humans can easily read each other’s gaze. In experiments, great ape infants usually follow a gaze only when the experimenter also turns his head. But human infants follow the gaze when the experimenter moves only his eyes. The whites of our eyes may help a lot in communicating with one another.

How does scientific knowledge about evolution relate to cultural beliefs about our origins?


Societies worldwide express their beliefs through a wide diversity of stories about how humans came into being. These stories reflect the universal curiosity people have about our origins. For millennia, they have played a vital role in helping people develop an identity and an understanding of themselves as well as of their community. This exhibit presents research and findings based on scientific methods that are distinct from these stories.

What about the gaps in knowledge about human evolution?


In science, gaps in knowledge are the driving force behind the ongoing study of the natural world and how it arose. The science of human origins is a vibrant field in which new discoveries continually add to our understanding of how we became human. You can learn about some of the most recent findings in this exhibit.

How can we reduce the conflict between religion and science?


Many scientists are people of faith who see opportunities for respectful dialogue about the relationship between religion and science. Some people consider science and faith as two separate areas of human understanding that enrich their lives in different ways. This Museum encourages visitors to explore new scientific findings and decide how these findings complement their ideas about the natural world.

Can the concept of evolution co-exist with religious faith?


Some members of both religious and scientific communities consider evolution to be opposed to religion. But others see no conflict between religion as a matter of faith and evolution as a matter of science. Still others see a much stronger and constructive relationship between religious perspectives and evolution. Many religious leaders and organizations have stated that evolution is the best explanation for the wondrous variety of life on Earth.

What has been discovered about evolution since Darwin?


A lot! Since Darwin died in 1882, findings from many fields have confirmed and greatly expanded on his ideas. We’ve learned that Earth is old enough for all known species to have evolved. We’ve discovered DNA, which confirms that all organisms are related to one another. And we’ve uncovered millions of fossils that provide evidence of how one life form evolved into another over time.

How do scientists know what past climates were like?


Among the major sources of evidence are sediment cores from the ocean bottom. They preserve the fossils of tiny organisms called foraminifera. By measuring oxygen in the skeletons of these organisms, scientists can calculate fluctuations in temperature and moisture over millions of years. Some of the most dramatic climate fluctuations in all of Earth’s history occurred during the period of human evolution.

How do scientists know the age of fossils?


Scientists have developed more than a dozen methods for determining the age of fossils, human artifacts, and the sediments in which such evidence is found. These methods can date objects millions of years old. What’s more, the methods can be tested against one another to provide a highly reliable record of the past. Read more about dating methods here.

Isn’t evolution controversial among scientists?


Evolution is the cornerstone of modern biology. There is no scientific controversy about whether evolution occurred or whether it explains the history of life on Earth. As in all fields of science, knowledge about evolution continues to increase through research and serious debate. For example, scientists continue to investigate the details of how evolution occurred and to refine exactly what happened at different times.

Did humans evolve in a straight line, one species after another?


Human evolution, like evolution in other species, did not proceed in a straight line. Instead, a diversity of species diverged from common ancestors, like branches on a bush. Our species, Homo sapiens, is the only survivor. But there were many times in the past when several early human species lived at the same time.



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