A wild new theory has claimed the origins of life on Earth were delivered by aliens who were terraforming the planet into a habitable world billions of years ago. Robert Endres, a scientist from ...

Human beings have been at the center of ecological change on Earth for thousands of years. But as history shows, no species ...

Humans will likely go extinct eventually, leaving behind a planet that has to adjust in their wake. While there is no true consensus as to what a human-free world will look like, there are a number of ...

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Among the many strange biological wonders Charles Darwin observed in his time, one haunted him above all. “‘The eye, to this day, gives me a cold shudder,” he admitted in a letter to an American ...

Stories centered around true love's kiss might be tales as old as time. And, according to a new study, kisses might even have been around before humans walked the earth. Humans kiss each other ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Our first meeting was a bit awkward. One of us is an ...