The huge boom in exotic pet trading around the world includes thousands of arachnid species—and the consequences could be devastating for the environment.

An old physics rule-of-thumb has just been updated in a potentially explosive way.

Here’s an unparalleled look at the sun, courtesy the European Space Agency’s Solar Orbiter mission.

A swirl of warm tropical water called the Loop Current is unusually far north this year. That’s bad news.

A growing “cap-and-cover” movement could replace urban highways with parks and real estate—and reverse decades of racial and class divisions in the process.

Wildfires are on the rise thanks to climate change. This new online risk map lets you know how vulnerable your home is to going up in flames.

Experts say it’s going to take “X-ray science to the next level.”