How We Know What Killed the Dinosaurs

How do we know that a meteor caused the extinction of the dinosaurs?
Laser preamplifier

The Problem With Nuclear Fusion

For decades physicists have pursued a long-shot approach to clean power—nuclear fusion.
Road Dahl

5 Things You Didn’t Know About Roald Dahl

What don't you know about the famous children's book author?
Hevelius map

Where Did the Moon Come From?

Despite years of study, it is only since the 1980s that a theory of the moon's origin has coalesced.

Where in the Solar System is Vulcan?

A hypothetical Planet Vulcan was the best explanation for strange astrological phenomena—until Einstein, that is. 
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The Internet’s Baby Pictures, 25 Years After the Birth of the Web

Tim Berners-Lee set up HTML (hypertext markup language) and HTTP (hypertext transfer protocol) twenty-five years ago today.

Our Oceans Are Suffocating

The oceans can’t catch a break. To rising temperatures and acidification caused by rising CO2 emissions, add oxygen deprivation .

Sending Tiny Robots to the Nearest Star

A group of astrophysicists think they have found a way to send a probe to the newest star system, Alpha Centauri.
Tyrannosaurus rex skeleton (the specimen AMNH 5027) at American Museum of Natural History.

An Asteroid Killed the Dinosaurs. Right?

What killed the dinosaurs? An asteroid wiped them out, right? New research suggests that even before that cataclysm, dinosaurs weren't doing so well.
From left to right: W. Nernst, A. Einstein, M. Planck, R.A. Millikan and von Laue at a dinner given by von Laue

Who was Max Planck?

Max Planck was a German physicist who won the Nobel Prize in Physics in 1918.