Add Yahoo as a preferred source to see more of our stories on Google. The Sun's distance from Earth allows it to be habitable for life. DrPixel/Moment via Getty Images A popular model of evolution ...
While the majority of animals (humans included) roam the Earth, some of nature’s most fascinating creatures spend their lives ...
WASHINGTON, Feb 14 (Reuters) - Roughly 300,000 years ago, our species first appeared on the African landscape before spreading globally and coming to dominate the planet. All this happened about 4.5 ...