Coastal cities may experience changing sea levels if glaciers continue to melt due to climate change, NASA said. By Hannah Preston.

From the archives: A nuclear apocalypse is far more likely than a zombie outbreak. By Rupert Goodwins.

Stopping the flow of carbon dioxide into the atmosphere is not enough. It has to be sucked out, too.

Sites log your keystrokes and mouse movements in real time, before you click submit. By Dan Goodin.

CO₂ could soon reach levels that, it’s widely agreed, will lead to catastrophe. By Elizabeth Kolbert.

Most mass extinctions began with vast convulsions of Earth’s interior—can we detect that?

America's national security can't afford any more idiot spy bungling. By Ryan Cooper.

China has disclosed the first images of secret hypersonic strike aircraft that are being developed to deliver warheads through U.S. missile defenses. By Bill Gertz.

You might not know it, but inside your Intel system, you have an operating system running in addition to your main OS, MINIX. And it’s raising eyebrows and concerns. By Bryan Lunduke.

What lurks in the Arctic’s thawing permafrost? By Robinson Meyer.

“The warhead is no longer on top of the missile.” By Seth Tupper.

How universities, banks and the government turned student debt into America's next financial black hole. By Matt Taibbi.

Treasury argues big investment firms don’t operate in shadows. By Jesse Hamilton.

In the event of a dirty bomb or a nuclear meltdown, emergency responders can safely tolerate radiation levels equivalent to thousands of chest X-rays, the Environmental Protection Agency said in new guidelines that ease off on established safety levels. By Ari Natter.

Filmmaker and photographer João Wainer talks about the years he spent taking pictures of what was once the largest prison in Latin America. By Débora Lopes as translated by Livia Holmblad.

The quote seems clear, but now he’s changing his tune. By Beth Mole.

“We’re still trying to figure out what’s going on.” By Kate Lunau.

A former Ringling Bros. tiger escaped near Atlanta in September. But that was only the beginning of a saga that drew attention from officials in three states. By Karin Brulliard.

How politically-driven bugaboos distract us from the real monsters. By Mark Perry.

A small group of programmers wants to change how we code—before catastrophe strikes. By James Somers.