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A special imaging technique takes pictures of blood flow under the skin, revealing how and why some elderly suffer poor blood flow.

Catherine Meyers, Staff Writer

Turning New Year’s resolutions into habits.

Alistair Jennings, Contributor

Scientists explore new ways to analyze classroom interactions with only video.

Yuen Yiu, Staff Writer

An app based on a flight-based study could let frequent fliers who travel near the North Pole track their radiation exposure.

Emilie Lorditch, Staff Writer

Shaving and grooming may create an opportunity for infections to spread.

Brian Owens, Contributor

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

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