Animals
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		AnimalsFamily Tree: An arboreal genome is sequenced
Researchers have sequenced the genome of a tree for the first time.
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		AnimalsBattle of the Hermaphrodites
A biologist argues that combining the sexes can actually make gender wars worse.
By Susan Milius - 			
			
		AnimalsHey, Roach Babe: Male cockroaches give fancy courting whistles
Some male cockroaches whistle at females with surprisingly complex, almost birdlike whistles.
By Susan Milius - 			
			
		AnimalsFlea treatment shows downside of social life
The flealike parasites that build up in a shared burrow take an unexpectedly large toll on the ground squirrel's reproductive success.
By Susan Milius - 			
			
		AnimalsHow do female lemurs get so tough?
Female ring-tailed lemurs may get masculinized by well-timed little rises of prenatal hormones.
By Susan Milius - 			
			
		AnimalsFemale moths join pheromone choruses
Female rattlebox moths can detect each other's male-luring pheromones and tend to gather in what may be a scent version of male frogs' chorusing around the pond.
By Susan Milius - 			
			
		AnimalsUnderage Spiders: Males show unexpected interest in young mates
Male Australian redback spiders mate readily with females too young to have external openings to their reproductive tracts, a tactic that reduces the male's risk of getting cannibalized.
By Susan Milius - 			
			
		AnimalsSeabirds take record summer vacations
Sooty shearwaters that breed in New Zealand have set a new record for off-season travel, covering 64,000 kilometers between visits to their mating ground.
By Susan Milius - 			
			
		AnimalsCrouching Scientist, Hidden Dragonfly
Although dragonflies are among the most familiar of insects, science is just beginning to unravel their complex life stories.
By Susan Milius - 			
			
		AnimalsHot and hungry bees hit hot spots
New lab experiments suggest that bumblebees like warm flowers and can learn color cues to pick them out.
By Susan Milius - 			
			
		AnimalsBabbling Bats: Do pups talk baby talk as human infants do?
Young sac-winged bats make long strings of adultlike noises and could be the first animals besides some primates and birds that babble when they're babies.
By Susan Milius - 			
			
		AnimalsStilts for ants make case for pedometer
Changing the leg length of desert ants upsets their ability to judge distance, providing the first evidence in any animal of a built-in odometer based on stride.
By Susan Milius