String Theory Is Not Dead

Out of the limelight, theoretical physicists seek the math that can explain the universe’s particles and forces.
Adolf Hitler at his Berghof mansion in Obersalzberg.

A Blind Beetle Named Hitler?

The case for changing offensive names of animals and plants, and how it can be done
Poster for the film The Deadly Mantis, 1957

The War on Bugs

In the 1950s, supersized insects were the villains in a rash of big-screen horror movies. What did those monstrous roaches represent, and how were they vanquished?
A Pattern of Various Shaped Water Drops on A teflon Frying Pan

The Stickiness of Teflon

From excitement about its potential to revelations of its possible toxicity, Teflon has taken a wild ride through American science, manufacturing, and marketing.
Retro circle pattern

How Two Rebel Physicists Changed Quantum Theory

David Bohm and Hugh Everett were once ostracized for challenging the dominant thinking in physics. Now, science accepts their ideas, which are said to enrich our understanding of the universe.
Picture of Kerria lacca from the book, Indian Insect Life: a Manual of the Insects of the Plains by Harold Maxwell-Lefroy

As You Lakh It

How did an oleoresin produced by insects in Asia become a standard part of European furniture manufacture and conservation?
Dramatic skies over the Arenal Volcano, Costa Rica

Central American Volcanoes Offer Clues to Earth’s Geological Evolution

Along 1,100 kilometers, from Mexico to Costa Rica, lies the Central American volcanic arc, where the variety of magma types make for a geological paradise.
This composite image contains X-ray data from Chandra (green and blue) that show heated material in the center of a shell generated by a supernova explosion. Optical data from Hubble show the glowing pink rim, which is ambient gas being shocked by the blast wave from the supernova, as well as the surrounding star field. The Type Ia supernova that resulted in the creation of this remnant would have been visible from Earth some 400 years ago.

How Stars Die

Nothing in this Universe is eternal—not even the stars.
How Mars may have looked about four billion years ago

How Mars Lost Its Magnetic Field—and Then Its Oceans

Chemical changes inside Mars's core caused it to lose its magnetic field. This, in turn, caused it to lose its oceans. But how?