News
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EarthIt’s a Gas: Trees emit unknown volatile substances
The chemical reactions taking place just above a northern Michigan forest hint that trees there and elsewhere may be emitting highly reactive gaseous substances that scientists haven't yet identified or directly detected.
By Sid Perkins -
HumansMouse Mourned: Yoda dies at age 4
An age-defying laboratory mouse known as Yoda died peacefully in his cage in Ann Arbor, Mich., on April 22, at the age of 4 years and 12 days.
By Ben Harder -
Health & MedicineUnsettling Association: Dental X rays linked to low-birth-weight babies
Getting dental X rays while pregnant might increase a woman's risk of giving birth to a low-birth-weight baby.