A well-defended territory is what some female hummingbirds find most attractive in a mate
Snapshot
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New Hall of Human Origins points to environmental change as major force in evolution of hominins
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For sweat bees, being social builds a more developed brain
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Patience and research may bring lion cubs to the National Zoo
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Eighty-thousand bark beetles enter National Museum of Natural History collections
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Females shut down male-male sperm competition in leafcutter ants
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Fungi still visible in wood charcoal centuries after burning
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At 1,500,000 mph, twin stars in the constellation Cancer win speediest orbit award
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Captive colony of Virginia big-eared bats providing valuable lessons in battle against deadly white-nose syndrome
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Ancient star discovered through patience and clever use of technology
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Medieval book is important resource for how plants were once collected, treated and used
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New study sees mother’s milk as a communications link that shapes infant temperament
