Every known living thing on Earth needs water. The life-giving liquid makes up around 60 percent of each human’s body weight, ...

Add Yahoo as a preferred source to see more of our stories on Google. A composite view of Mars taken by the Viking I and II probes. NASA/USGS In September, NASA announced the discovery of a possible ...

How can we know what life on Earth looked like more than three billion years ago, when rocks from that era are so rare and difficult to exploit? To answer this question, researchers have adopted ...

By reconstructing ancient nitrogen-processing enzymes, scientists are uncovering new clues about how early life survived on a very different Earth.

We may not have found any definitive proof of extraterrestrial life just yet, despite plenty of hope among scientists. But if we were to ever come to an answer in the form of alien biology or ...

Add Yahoo as a preferred source to see more of our stories on Google. A 13-atom molecule containing sulfur (seen in this illustration) was discovered in interstellar space for the first time. - ...

(CNN) — Scientists have discovered the largest organic molecule containing sulfur — a key ingredient for life — ever identified in interstellar space. The researchers call the discovery a “missing ...