6,875 results
6,875 results for: Bears
- Humans
Letters from the April 16, 2005, issue of Science News
Ax questions, hard answers Another hypothesis for the polish on the Stone Age corundum ax head is that the Stone Age people never had absolutely pure corundum, which indeed would have required diamond to polish (“In the Buff: Stone Age tools may have derived luster from diamond,” SN: 2/19/05, p. 116). It is possible that […]
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DNA’s Moody Temperament: Gene variant linked to depression-ready brain
A common version of a gene involved in regulating the neurotransmitter serotonin creates a brain that responds sensitively to stress and is therefore more likely to become depressed.
- Humans
From the December 29, 1934, issue
A young Crater Lake in Oregon, the internal structure of chromosomes, and a revolutionary method of electric power transmission.
- Humans
From the May 25, 1935, issue
A yacht's air resistance-reducing mast, plants that absorb poison, and new fossils from Patagonia.
- Anthropology
Fossil ape makes evolutionary debut
Newly discovered fossils from an ape that lived in what's now northeastern Spain around 13 million years ago may hold clues to the evolutionary roots of living apes and people.
- Humans
Science News of the Year 2005
A review of important scientific achievements reported in Science News during the year 2005.
- Paleontology
Groovy Bones: Mammalian ear structure evolved more than once
Fossils of an ancient egg-laying mammal indicate that the characteristic configuration of the bones in all living mammals' ears arose independently at least twice during the group's evolution.
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Questions on the Couch
A new policy statement on evidence-based practice from the American Psychological Association illustrates the intense struggle among researchers and clinicians over how best to study the effectiveness of psychotherapy in its many forms.
- Paleontology
The last ice age wasn’t totally icy
Radiocarbon dating of fossils taken from caves on islands along Alaska's southeastern coast suggest that at least a portion of the area remained ice-free during the last ice age.
- Plants
Save the Flowers
Now that breeders have created thousands of new ornamental-flower varieties, scientists are turning their attention to restoring the fragrances that fell victim to the process.
- Earth
Nonstick Pollution Sticks in People
A new study reveals high blood concentrations of a potentially toxic component of nonstick products in people near a plant making Teflon.
- Materials Science
A hard new material with a soft touch
Adding exotic substances called quasicrystals to polymers creates nonabrasive hard materials, which could soon serve as coatings in machine parts.
