Animals
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AnimalsA guide to the world’s biggest flightless birds
A rhea on the loose in England has prompted warnings about approaching the bird. From ostriches to cassowaries, here’s your guide to friendly and unfriendly big birds.
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AnimalsFrustrated fish get feisty
Smaller rainbow trout become more aggressive towards bigger fish when they don’t their usual treats.
By Susan Milius -
AnimalsSecrets of a sailfish attack
The large, long-nosed sailfish use their rostrums more like a sword than a spear to attack prey.
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AnimalsDolphins use sponges to dine on different grub
The animals can learn to use tools to exploit food sources that would be otherwise unavailable, a study suggests.
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GeneticsRainbow trout genome shows how genetic material evolved
The finding challenges the idea that whole genome duplications are followed by quick, massive reorganization and deletions of genetic material.
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AnimalsSubmariners’ ‘bio-duck’ is probably a whale
First acoustic tags on Antarctic minke whales suggest the marine mammals are the long-sought source of the mysterious bio-duck sound.
By Susan Milius -
LifeCheetahs, but not wild dogs, manage to live with lions
One conservation tenet says that cheetahs can’t survive when lions are around, but it’s wild dogs that disappeared in one lion-dense area of the Serengeti.
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AnimalsLittle thylacine had a big bite
A reconstruction of the skull of a thylacine, an extinct, fox-sized Australian marsupial, reveals that the animal could have eaten prey much larger than itself.
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TechTo do: Exhibits to explore this May in D.C. and New York
Events include a celebration of science and original watercolor paintings from John James Audubon.
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AnimalsHow a chimp goes mattress hunting
Chimpanzees prefer firm beds made of ironwood, a new study finds.
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AnimalsMost extreme female penis is found on cave lice
Female penis, male vagina have been discovered in tiny Brazilian insects.
By Susan Milius