Henry Aldridge & Son Ltd; Universal History Archive/Universal Images Group via Getty A letter written onboard the Titanic just days before the ship sank has sold for nearly $400,000 — far ...

Despite capturing hearts around the world, the wild axolotl — an aquatic salamander with feathery frills and a soft smile — faces extinction. Fortunately, for both axolotls and their fans ...

CREDIT: Marcus Brandt/picture alliance via Getty Images. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday ...