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The same system that rewards you for selfish actions also rewards you for generous ones.

Alistair Jennings, Contributor

Study quantifies threats to plants and points the finger -- at us.

Gabriel Popkin, Contributor

A company makes synthetic people for medical testing and medical training.

Karin Heineman, ISTV Executive Producer

If you are suddenly really hungry at 3pm it's because your brain feels like it's chemically high!

Alistair Jennings, Contributor

Sending research dollars to where they are needed most requires a hard look at real, sustained threats to society.

Tanya Parish, Guest Columnist

Improvements in the technology of transplantation have opened up the donation of kidneys to significantly more living donors.

Peter Gwynne, Contributor

Virtual reality is helping the way we treat pain.

Karin Heineman, ISTV Executive Producer

Scientists try to uncover the brilliance of Leonardo da Vinci.

Joel Shurkin, Contributor

What you need to know before your next shopping trip.

Karin Heineman, ISTV Executive Producer

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