Purple Earth Hypothesis suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for ...

Earth's oceans may have been green for billions of years until the first photosynthetic organisms flooded our atmosphere with ...

Neutrinos are sometimes called “ghost particles,” because they are nearly weightless, rarely interact with any other matter, ...

I think space is in a similar situation,” Josef Aschbacher, director general of the European Space Agency, told The Big ...

Mr. Vance did not mention Ukraine in his speech, despite the high tension in Europe over President Trump’s approach to ending the war, and as an explosion at the former nuclear plant at ...

This sword-shaped evergreen plant is hardy in USDA Zones 7 to 11. Use the cast iron plant in deep or filtered shade to create a tropical look in the garden year-round ... No shade garden is complete ...

It may sound strange but plants can remember stress. Scientists are still learning about how plants do this without a brain.

As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

It may sound strange, but plants can remember stress. Scientists are still learning about how plants do this without a brain.

It might not look like much in this image ... has a 1-in-48 chance of impacting Earth in 2032. For obvious reasons, astronomers are desperate to learn as much as they can about 2024 YR4, estimated ...

Without Bregman, the Tigers aren't clear-cut favorites to win the American League Central or definite contenders for the World Series. They finished with an 86-76 record last season, six games ...