News
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HumansWhaling back to the future
International commission meets after soul-searching on years of dispute.
By Susan Milius -
LifeWhen cells go quiet
Connections between nerve cells may be lost when communication between the cells lapses.
By Amy Maxmen -
Health & MedicineBreathe easy
When it comes to heart function, the concentration of pollution in the air may matter less than its chemical makeup.
By Tia Ghose -
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PhysicsLeft in the cold
An optical trap lets atoms in but not out, and it can be used to study matter at ultracold temperatures.