1,929 results
- Paleontology
Sea monsters made great mothers
Fossilized plesiosaur with fetus suggests ancient reptiles cared for their young.
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2011 Science News of the Year: Life
Multicellular life from a test tube In less than two months, yeast in a test tube evolved from single-celled life to bristly multicellular structures. The new, snowflakelike forms act like multicellular organisms, reproducing by splitting when they reach large sizes and evolving further in response to harsh conditions, William Ratcliff of the University of Minnesota, […]
- Earth
Dinosaurs, in living color
Researchers find microscopic structures in some fossils that may have held pigments.
- Science & Society
90th Anniversary Issue: 1980s
Solving the AIDS puzzle and other highlights, 1980–89
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- Life
Dinosaurs broiled, not grilled
Debris from K-T impact could have been heat source and heat shield.
- Paleontology
An ammonite’s last supper
A detailed X-ray image of a fossil reveals an ancient marine creature’s diet.
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Letters
Yawn and open your ears I read with interest your article on yawning (“Yawn,” SN: 5/7/11, p. 28). Over the years I have formulated a private theory on at least one of the reasons why we yawn and would like to share my speculations with your readership. My insight essentially began when I noticed that […]
- Life
Groovy teeth suggest dinosaur was venomous
Fossils show depression in upper jaw that held venom-producing glands.
- Paleontology
Dinos molted for a new look
In one species, adolescents appear to have sprouted a new type of feathers as they matured.
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2010 Science News of the Year: Earth
Credit: Alvaro Ybarra Zavala/Getty Images Inside the Haiti quake Some 230,000 Haitians died when a magnitude-7 earthquake struck just outside Port-au-Prince on the afternoon of January 12. Scientists from around the world scrambled to the scene (SN Online: 1/16/10) to assess which fault had ruptured and whether more people were at risk. Early ideas held […]
- Earth
Extinctions breed carbon chaos
Massive die-off left ecosystems vulnerable, an analysis suggests.
