Search Results for: Vertebrates
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1,539 results
1,539 results for: Vertebrates
- Paleontology
Tusk analyses suggest weaning took years
Changes in the proportions of various chemical isotopes deposited in mammoth tusks as they grew have enabled scientists to estimate how long it took juvenile mammoths to become fully weaned.
- Paleontology
Big bird terrorized South America
Researchers in Argentina have discovered fossils that may represent the heftiest flightless bird to ever have roamed the planet.
- Chemistry
Whiff Weapon: Pheromone might control invasive sea lampreys
Researchers have characterized the primary components of the migratory pheromone that guides sea lampreys to suitable spawning areas.
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Upcoming events
From the issue of March 23, 2013.
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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 […]
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Letters to the editor
Invertebrate enigmas I found the recent article “Evolutionary enigmas” (SN: 5/18/13, p. 20) fascinating because I know of another example of an invertebrate animal possessing a “strictly vertebrate” quality. As a high school human anatomy and physiology teacher, I sometimes have my students test the effects of the constituents in cigarette smoke on live Daphnia […]
- Life
Spiders love sweet smell of blood perfume
For on spider species, feeding on blood-gorged mosquitoes adds charm to a mate
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Horse genome added to growing list of barnyard genetics projects
Equines join cucumbers and pigs as the most recent additions to the roster of organisms to have their complete DNA code spelled out. The new work on horses also helps answer a key question about chromosome structures called centromeres.
- Paleontology
Small ancestor of giant sauropods unearthed
Fossils suggest that the bipedal dinosaur occasionally walked on all fours and could open its mouth wide to gather foliage.
- Life
Sexual conflict takes shape in ducks
Up-close view of male ducks reveals extreme speed and extreme conflict.
- Life
Carnations had evolutionary bloom boom in Europe
New species have evolved at a surprisingly rapid pace, new study suggests
- Animals
New candidates for smallest vertebrate
Two recent scientific papers have described fish species that could, depending on the definition, be the world's smallest known vertebrate.
