The Gut Flora: You and Your 100 Trillion Friends

Jeroen Raes at TEDxBrussels

Jeroen Raes is a bionaut, he researches the human microbiome. What he’s discovered in his lab at the Flanders Institute of Biology could herald a major breakthrough not just in gastro-intestinal medicine, but in our fundamental knowledge of the human biology. It turns out that there are only three different types of gut bacteria and, just like blood groups, the three types are totally independent of race, sex, age or diet.

See-through Brains

From Nature Videos

Scientists have come up with a way to make whole brains transparent, so they can be labelled with molecular markers and imaged using a light microscope. The technique, called CLARITY, enabled its creators to produce the detailed 3D visualisations you see in this video. It works in mouse brains and human brains; here the team use it to look into the brain of a 7-year-old boy who had autism.