Life
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Animals
Vampire bats don’t learn from bad lunch
For the first time, a mammal has flunked a controlled test for developing a food aversion after getting sick just once, and that unusual creature is the common vampire bat.
By Susan Milius -
Paleontology
Pretty Pollen
The pinup of the pollen grain of the month is just one of several intriguing features at this University of Arizona Web site devoted to palynology–the study of the microscopic, decay-resistant remains of plants and animals. The site provides definitions, illustrations, a brief history, a section for kids, and examples of applications in archaeology, paleoecology, […]
By Science News -
Ecosystems
Spring Forward
Scientists who study biological responses to seasonal and climatic changes have noted that the annual cycles for many organisms are beginning earlier on average, as global temperatures rise.
By Sid Perkins -
Animals
Flowers, not flirting, make sexes differ
Thanks to lucky circumstances, bird researchers find rare evidence that food, not sex appeal, makes some male and female hummingbirds look different.
By Susan Milius -
Ecosystems
After Invasions: Can an ant takeover change the rules?
A rare before-and-after study of a takeover by an invasive ant species shows the interloper quickly disassembling the basic rules of the invaded community.
By Susan Milius -
Ecosystems
Lab ecosystems show signs of evolving
An ambitious test of group selection considers whether natural selection can act on whole ecosystems as evolutionary units.
By Susan Milius -
Paleontology
Was it sudden death for the Permian period?
The massive extinctions that came at the end of the Permian period could have occurred within a mere 8,000 years, which suggests a catastrophic cause for the die-offs.
By Sid Perkins -
Ecosystems
Ultimate Sea Weed Loose in America
The unusually invasive strain of seaweed that has been smothering coastal areas of the Mediterranean has shown up in a California lagoon, the first sighting of this ecologically devastating alga in the Americas.
By Janet Raloff -
Animals
Sibling Desperado: Doomed booby chick turns relentlessly violent
The first known case among nonhuman vertebrates of so-called desperado aggression—relentless attacks against an overwhelming force—may come from the underling chick in nests of brown boobies.
By Susan Milius -
Animals
He and she cooperate on anti-aphrodisiacs
Scientists have for the first time identified a chemical that serves as a butterfly anti-aphrodisiac.
By Susan Milius -
Animals
Better Than Real: Males prefer flower’s scent to female wasp’s
In an extreme case of sex fakery, an orchid produces oddball chemicals to mimic a female wasp's allure so well that males prefer the flower scent to the real thing.
By Susan Milius -
Animals
One-Two Poison: Scorpion starts with a cheap shot
A South African scorpion economizes as it stings, injecting a simple mix first, followed by a venom that's more complicated to produce.
By Susan Milius