Drought drove American pursuit of desalination in the mid-20th century. Now a changing climate has compelled nations around the world to embrace the double-eged technology. 

Remember the fire-fighting mascot Smokey Bear? Meet Johnny Horizon, his little-remembered, pollution-fighting counterpart.

It’s complicated.

Can you really collapse and wake up speaking a totally new language?

When French authorities learned about some missing uranium, they thought someone had stolen it to make rogue atomic bombs. It turned out to be more incredible than that. 

The downside of using genetic genealogy to fight crime.