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Human physiology

A new study with potato chips suggests we all perceive scents differently, but culture tells us to agree when naming them.

Marcus Woo, Contributor

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

Reanalyzed foot and handprints may date to thousands of years before many thought the roof of the world was settled.

Charles Q. Choi, Contributor

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

Alistair Jennings, Contributor

Two new studies find that electronic device use near bedtime is linked with poor sleep in adults and children.

Rebecca Boyle, Contributor

Yoshinori Ohsumi revealed the workings of autophagy, a routine biological process implicated in many diseases.

Brian Owens, Contributor

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

Peter Gwynne, Contributor

Microscopic drug-filled "balloons" can be ruptured precisely where needed.

Dave Zobel, Contributor

The challenges of nourishing astronauts on years-long trips.

Charles Q. Choi, Contributor

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