In the 1930s, it was generally accepted that the body needed sodium to function, but no one had studied what broke down when the sodium in a person's diet was removed. One researcher researcher and four volunteers decided to find out. It was awful.
Click the play button on the video above, and you'll see a piece of sodium leaping over and over to get its (metaphoric) toes out of the water. It looks like a cute little experiment — but it's not quite as safe as it looks. Find out why!
Fast food is loaded with salt. This should come at no surprise. What is surprising, however, is that the same menu items often have different salt levels depending on where they're served.
In the days before environmental regulations, the War Assets Administration disposed of its metallic sodium from WWII the old-fashioned way — by throwing it into Washington's Lake Lenore and watching it go boom. So let's sit back and kick off the week with a nice chemical explosion.
The fossil record reveals the last 3.4 billion years of life on Earth. But before then, when life first emerged, we have next to nothing. The consensus view is that life began in the oceans... but there might be another, weirder, possibility.