Literally billions." To put that in perspective, the Earth is thought to be about 4.5 billion years old, which means these ...

Although these new life-forms spread worldwide, beginning at least 570 million years ... the Cambrian explosion was the point when life on Earth opened out, kaboom, like a starburst of wondrous ...

Nearly 15 years later, she’s pursuing new research on the boundaries of life. Felisa Wolfe-Simon, a research scientist who presented findings in 2010 that suggested arsenic could be a building ...

Death is not an end but a passage, a test that defines life’s true purpose, shaping faith and the journey toward the divine ...

The question is no longer, is there life beyond Earth? It’s a pretty sure bet ... by more powerful telescopes coming on line, beginning with the James Webb Space Telescope, which NASA hopes ...

It is in this spirit that we tackle seven of the most crucial “when” questions in a special package beginning here ... elements that went on to create life as we know it could have come ...

And yet, fungi have also been integral to the development of life on Earth. In fact ... and we’re only beginning to scrape the surface of what we can learn from them. Here are a few things ...

Geologists have calculated the age of Earth at 4.6 billion years. But for humans whose life span rarely reaches ... the discovery of radioactivity at the beginning of the 1900s.