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9 of the most 'genetically isolated' human populations in the worldGeographical barriers and cultural differences can prevent people from mingling with their neighbors, leading to genetic isolation — and the phenomenon is more common than most people think.
health -
22 inventions that changed the worldFrom the wheel 5,500 years ago to the birth control pill, these 20 inventions had huge ramifications and have helped humans shape the world around us.
technology -
Body parts grown in the labIn recent years, scientists have successfully grown a range of miniature organs and human body parts in the lab.
health -
12 strange reasons humans haven't found alien life yetScientists have been searching for evidence of extraterrestrial life for decades. So, where are all the aliens? Here are 12 intriguing theories ...
extraterrestrial-life -
From 'Lucy' to the 'Hobbits': The most famous fossils of human relativesCountdown Lucy may be the best-known prehuman fossil in the world. But other famous fossils have given us important insight into our evolutionary history.
Countdown -
7 centuries-old suits of battle armor from around the worldCountdown From Roman "fish scale" armor to Japanese samurai suits, these examples of battle armor were designed to protect and impress.
Countdown -
The 9 most massive numbers in existenceFrom the humble trillion to Graham's number, here are some of the most massive numbers ever conceived by humans.
mathematics -
32 physics experiments that changed the worldFrom the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most important physics experiments that changed the world.
physics-mathematics -
32 things on Mars that look like they shouldn't be thereThe more scientists study the Red Planet, the more they find unusual objects and patterns scattered across Mars' surface. Here are some of the most baffling.
mars
