John Legend is on a mission to transform America's criminal justice system. Through his Free America campaign, he's encouraging rehabilitation and healing in our prisons, jails and detention centers -- and giving hope to those who want...

Hank puts the immense power of the sun into perspective through comparison with the most powerful nuclear bomb ever detonated.

The story picks up where we left off last time, with Einstein writing the president of his new homeland, the United States, urging him to build a nuclear weapon before Hitler. This is the tale of the most destructive force humans have...

Insects make up 80 percent of the world’s species, so it's not all that surprising we’ve occasionally made them into monsters in science fiction and horror. What is staggering is why the “big bug” subgenre took off in the 1950s. Find out...

MOT 1949: U.S. SENATOR TYDINGS: EXT MS Senate Office building, Washington D.C. INT CU Door sign 'Mr. Tydings, Maryland.' REPRISAL: INT VS Senator Millard E. Tydings (1890-1961) talking w/ men, '...about atomic energy... careful to screen...

Atomic Alert (Elementary Version), a 1951 production of Encyclopaedia Britannica Films.

This video was so dang fun to research, which, of course, I feel super guilty about because, like, real people died. But, after watching the HBO miniseries, I knew there was more to the science of this. I've also heard a lot of stuff...

In 1954, the US Government conducted a series of secret nuclear tests in the Marshall Islands. The idyllic coral island Bikini Atoll became the epicentre of the largest nuclear test disaster in US history. The affects of radiation...