Popular Science. Demystifying the worlds of science and technology since 1872.

When frozen ground known as permafrost degrades, it can fail catastrophically. That could spell serious trouble for the whole planet.

Gemini kept an eye on her cubs around other bears fishing in Alaska’s Anan Creek.

That list of passwords isn’t enough to ensure your heirs can get into your online accounts.

The decommissioned Swift Observatory turned a two-year mission into more than two decades of science.

Medieval medicine was concocted from some of the same ancient remains.

The pair also display affectionate behaviors including licking, rubbing, and nuzzling.

Birds with lead poisoning are often hit by cars.

You’ve likely already touched it about 47 times today.

No matter who you’re shopping for, these editor-approved products will make you a gift-giving legend this year.

Let’s clear the air about how easy it is to construct a $75 filter cube.

As physicians age, debates about mandatory testing or retirement intensify.

Step aside, Teenage Mutant Ninja Turtles.