Why I gave my kidney to a stranger

“…I was selfishly, deeply gratified to have made at least one choice in my life that I know beyond a shadow of a doubt was the right one.”

Welcome to Pleistocene Park

In Arctic Siberia, Russian scientists are trying to stave off catastrophic climate change—by resurrecting an Ice Age biome complete with lab-grown woolly mammoths.

The men who volunteered to be poisoned by the Government

In 1902, the US Congress authorized funds for human trials of food preservatives to determine if they would be used safely. Harvey Wiley, Chief of the Bureau of Chemistry called these his “hygienic table studies.” They soon became known popularly as “the Poison Squad.”

How the world’s heaviest man lost it all

Paul Mason used to weigh close to 1,000 pounds. Now that he’s shed almost all of it, freeing himself from his tomb of a body, he’s facing a question that’s heavy in its own right: How should he spend the rest of his life?