Ever wondered just where humans fall on the food chain? Wonder no more. Researchers have calculated our precise location (somewhere right next a pig or an anchovy, apparently), along with another surprising trend: While we're firmly omnivores, we're also becoming more and more carnivorous.
Archaea are some of the most abundant and least understood, organisms on the planet. These single-celled creatures weren't even properly discovered until the 1970s, and big questions about them remain unanswered, such as whether other organisms ever eat them.