Life
We summarize the week's scientific breakthroughs every Thursday.
- Animals
Who’s on first with hummingbird bills
A survey of 166 hummingbird species links sex differences in bill length to sex differences in plumage and to breeding behavior.
- Paleontology
All mixed up over birds and dinosaurs
A bit of fossil fakery snookered a team of paleontologists
- Ecosystems
Famine reveals incredible shrinking iguanas
Marine iguanas in the Galápagos Islands are the first vertebrates known to reduce their size during a food shortage and then regrow to their original body lengths.
- Animals
Male bats primp daily for odor display
For the first time, scientists have described the daily routine of male sac-winged bats gathering to freshen the odor pouches on their wings.
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