1,929 results
- Life
Just warm enough
Mammals may have evolved a characteristic body temperature to avoid fungal infections without burning too hot.
- Paleontology
Tyrannosaurs lived in the Southern Hemisphere, too
Australian fossils suggest the kin of T. rex dispersed globally 110 million years ago.
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Dinosaur Odyssey: Fossil Threads in the Web of Life by Scott D. Sampson
The past three decades have seen a plethora of major discoveries, described here, about dinosaurs and prehistoric Earth. DINOSAUR ODYSSEY: FOSSIL THREADS IN THE WEB OF LIFE BY SCOTT D. SAMPSON University of California Press, 2009, 332 p., $29.95.
- Paleontology
Feather-covered dinosaur fossils found
Scientists have uncovered a feather-laden, peacock-sized dinosaur that predates the oldest known bird.
- Earth
Gassy volcanoes tied to mass extinction
Chemicals from a massive Siberian eruption 250 million years ago may have polluted the atmosphere and killed off most life on the planet.
- Earth
Earliest birds didn’t make a flap
The feathers of Archaeopteryx and Confuciusornis probably were not strong enough to support sustained flight.
- Earth
Oldest feathered dino shows its colors
Analysis of a fossil suggests plumage first evolved for display, not flight.
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Dressing up dinos
Adding soft tissue to bone helps scientists, paleoartists bring ancient creatures to life.
- Paleontology
New fossil helps solidify dino origins
The dog-sized creature bolsters the notion that early dinosaurs first appeared in what is now South America.
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Letters
Making morphine The article “Chemists pin down poppy’s tricks for producing narcotic painkiller” (SN: 4/10/10, p. 5) may presage geopolitical changes in Afghanistan, regardless of whether there are engineered virus attacks or alternative crop programs. A technological advance like this one will eventually be used in the United States and Europe. Even if governments continue […]
- Paleontology
Sail-backed dinos had semiaquatic lifestyle
Isotopic analyses of fossils suggest the carnivores had crocodile-like habits.
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Book Review: Dinosaurs (book series) by Matteo Bacchin and Marco Signore
Review by Janet Raloff.
