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AnimalsA peek into polar bears’ lives reveals revved-up metabolisms
Polar bears have higher metabolisms than scientists thought. In a world with declining Arctic sea ice, that could spell trouble.
By Susan Milius -
TechNew laser emits a more stable, energy-efficient light beam
A new type of laser could emit more stable, energy-efficient light beams than its conventional counterparts.
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PhysicsGravity doesn’t leak into large, hidden dimensions
Gravitational waves from a recently observed neutron star merger offer no evidence of large, unknown dimensions.
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AgricultureGrapevines are more drought-tolerant than thought
Grapevines handle drought better than previously thought.