Are We Still Evolving?
Ever since Charles Darwin formulated his theory of evolution, scientists have wondered whether the process still applies to humans. At some point, did we stop evolving?
Olly Bootle explains the current scientific view of evolution by natural selection when a vast majority of babies born in industrialized countries live to an age suitable for reproduction: "Scientists suspected that by adapting to environmental change—the driver of natural selection—using our ingenuity, we might have stopped ourselves evolving. The late Stephen Jay Gould, one of the most respected of evolutionary biologists, once said: 'There has been no biological change in humans in 40,000 or 50,000 years. Everything we call culture and civilisation we've built with the same body and brain.' It turns out that he, and many others, were wrong."
How a cataclysm worse than what killed the dinosaurs destroyed 90 percent of all life on Earth.
While the demise of the dinosaurs gets more attention as far as mass extinctions go, an even more disastrous event called "the Great Dying” or the “End-Permian Extinction” happened on Earth prior to that. Now scientists discovered how this cataclysm, which took place about 250 million years ago, managed to kill off more than 90 percent of all life on the planet.
A new study discovers the “liking gap” — the difference between how we view others we’re meeting for the first time, and the way we think they’re seeing us.
We tend to be defensive socially. When we meet new people, we’re often concerned with how we’re coming off. Our anxiety causes us to be so concerned with the impression we’re creating that we fail to notice that the same is true of the other person as well. A new study led by Erica J. Boothby, published on September 5 in Psychological Science, reveals how people tend to like us more in first encounters than we’d ever suspect.
Using advanced laser technology, scientists at NASA will track global changes in ice with greater accuracy.
Leaving from Vandenberg Air Force base in California this coming Saturday, at 8:46 a.m. ET, the Ice, Cloud, and Land Elevation Satellite-2 — or, the "ICESat-2" — is perched atop a United Launch Alliance Delta II rocket, and when it assumes its orbit, it will study ice layers at Earth's poles, using its only payload, the Advance Topographic Laser Altimeter System (ATLAS).
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