In October 1983, Carl Sagan introduced the world to the idea of nuclear winter caused by nuclear weapon fallout. Is it still a threat?
Yesterday
Jennifer Doudna on what it takes to be a good scientist
In 2020, Jennifer Doudna shared the Nobel Prize in chemistry for the development of the gene-editing technique CRISPR. Along with related techniques, it has become an essential tool in genetics, allowing specific sections of genetic code to be cut and replaced in a genome. It’s a ... Show More
29m 38s
Oct 20
Getting the billion-dollar PRIMA space telescope off the ground
In late September 2026, NASA announced that a new telescope called PRIMA was getting a green light and advancing to something called Phase B of the development process. But what does that mean exactly? How does a billion-dollar space project get thought up, designed, approved, an ... Show More
15m 42s
Jun 2024
The world after nuclear war
A mile of pure fire. A flash that melts everything — titanium, steel, lead, people. A blast that mows down every structure in its path, 3 miles out in every direction. Journalist Annie Jacobsen spent years interviewing scientists, high-ranking military officials, politicians, and ... Show More
57m 6s
Jul 2023
Destroyer of Worlds (Replay)
July 16, 1945. It happened within a millionth of a second. In the New Mexico desert in the early morning hours, a group of scientists watched in anticipation as the countdown began. It was silent at first, yet hot and unbelievably bright. Then came the sound. The first-ever atomi ... Show More
28m 17s