Search Results for: Vertebrates
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Letters to the editor
Fusion reactions It is not true that fusion packs the highest punch of any known energy-generating process (“Ignition failed,” SN: 4/20/13, p. 26). Matter-antimatter annihilation far exceeds it (Star Trek had it right back in the 1960s). I believe that under certain conditions, matter falling into a black hole can also yield more energy than […]
- Life
Rainforest katydids evolved mammal-like ears
Tiny hearing organs below insect’s knees have a structure similar to those in humans.
- Life
News in brief: Fins to limbs with flip of genetic switch
Boost of gene activity may help explain how arms and legs evolved in vertebrates.
- Tech
Creature power
Biological fuel cells that generate electricity by harnessing sugars and oxygen in the body may one day power implanted devices in humans and other animals.
- Paleontology
Not your typical pterosaur
A beautifully preserved fossil from Germany displays a wing unlike any ever seen.
- Life
How mammals grow ears: With a flaw
A newly discovered rupture-and-repair process that occurs in embryos could explain a lot about infections and hearing defects.
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- Health & Medicine
Smoking hurts teen girls’ bones
Adolescents who use cigarettes seem to accumulate less bone mineral than those who don’t.
- Life
Old-fashioned fish regrow fins
Fish on an ancient line can regenerate lost limbs with newt-like flair, suggesting that ability was shared among ancient ancestors.
- Life
Blue-green algae release chemical suspected in some amphibian deformities
Retinoic acid levels high in waterways rich in cyanobacteria blooms.
- Paleontology
Earliest primate had tree-climber ankles
A creature known only from fossils of its teeth gets some more parts.
- Life
Hind wings gave four-winged dino flight control
Much-debated rear wings could have given Microraptor extra help in airborne maneuvers.
