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Human physiology

Scientists have found a way to detect Alzheimer's disease using a patient's sense of smell.

Marsha Lewis, Contributing Producer

Decades after atomic bombs dropped, scientists debate their application to modern radiation safety standards.

Gabriel Popkin, Contributor

It's really just your brain taking a shortcut.

Kirk Zamieroski, Contributor

New research pinpoints the acoustic ingredient that gives screams their terror.

Charles Q. Choi, Contributor

Social-media sequel to #TheDress is not the same scientifically.

Michael Greshko, Contributor

Study of Toba/Qom in Argentina highlights effect of artificial lights on sleep patterns.

Rebecca Boyle, Contributor

The research on what to eat at night and how late-night snacking affects the body is relatively underdeveloped.

Chris Gorski, Editor

Researchers identify a method to prevent chemotherapy from wreaking havoc on healthy cells.

Joel Shurkin, Contributor

Retroviruses joined the human genome long ago; their effects are not yet clear.

Charles Q. Choi, Contributor

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