How toxic fumes seep into the air you breathe on planes.

And what it lost in the process.

California’s redwoods, sequoias and Joshua trees define the American West and nature’s resilience through the ages. Wildfires this year were their deadliest test.

A growing body of research suggests that trees can communicate and cooperate in the wild.

The Canadian scapegoat of the AIDS epidemic.

He’s an expert on Twitter virality, but not on infectious disease. Does he do more help or harm?

Prenatal testing is changing who gets born and who doesn’t. This is just the beginning.

The pandemic comes to Star City, the secretive home of Russia’s space program.

For a few days in 1995, many Indians believed a religious idol had developed a lifelike ability to drink milk.

Dutch astronomer, mathematician, and inventor Christiaan Huygens’ early work on probability paved the way for his very modern evaluation of what alien life might look like.

A trip to one of America’s quietest places and the guy who has dedicated his life to keeping it that way.

Data is the lifeblood of a functioning government. Over the past four years, the Trump administration has destroyed, disappeared, or distorted vast swaths of the information the state needs to protect the vulnerable, safeguard our health, and alert us to emerging crises.

How the waters off of LA became a DDT dumping ground.

The rare Chilean soapbark tree produces compounds that can boost the body’s reaction to vaccines.

“Uncertainty, it has been shown, is more painful than certain physical pain.”

In Gujarat, India, a special breed of camel is not constrained by land—but cannot escape the many forces of change.

Millions of human artifacts circle the Earth. Can we clean them up before they cause a disaster?

Millions will be displaced. Where will they go?

Here’s how a tiny brush fire became California’s deadliest wildfire.

How UFO culture took over America.

What the journey of swifts, who spend all their time in the sky, tell us about the future.

For the first time, data scientists have modeled how climate refugees might move across international borders. This is what they found.

There are myriad arguments for and against eating roadkill. Can they all be true at the same time?

Scientists are studying the extreme weather in northern Argentina to see how it works—and what it can tell us about the monster storms in our future.