Why are all proteins ‘left-handed’? New theory could solve origin of life mystery

Recent research identifies the proteins that kickstart limb formation in embryos. Just 3 gene-transcription factor proteins in mice were enough to convert certain non-limb-forming stem cells into limb-forming versions. The findings are a next step in regenerative medicine, to grow or regrow limbs.

There’s a New Theory About Where Dark Matter Is Hiding

Compound vital for all life likely played a role in life's origin