6,907 results
6,907 results for: Bears
- Climate
Glacial microbes gobble methane
While some bacteria produce methane in Greenland’s melting ice sheet, others may consume the greenhouse gas as it escapes.
- Humans
Letters from the May 19, 2007, issue of Science News
Merry go round When considering a spin rate of 1,122 revolutions per second, has anyone determined the diameter of the neutron star XTE J1739-285 (“Dance of the dead,” SN: 3/17/07, p. 173)? If, for example, it were the same diameter as Earth, it would be traveling far in excess of the speed of light at […]
- Archaeology
Written in bone
Researchers are reconstructing the migrations that carried agriculture into Europe by analyzing DNA from the skeletons of early farmers and the people they displaced.
- Planetary Science
The ice of a distant moon
Jupiter’s moon Europa hides a liquid ocean, and conceivably life, under kilometers of ice. The challenge for engineers is how to penetrate that frozen barrier with technology that can be launched into space and operated remotely.
- Humans
Letters from the August 18, 2007, issue of Science News
Exhaustive analysis I would debate the “1,000 watts or more” value attributed to typical adults during strenuous exercise (“Powering the Revolution: Tiny gadgets pick up energy for free,” SN: 6/2/07, p. 344). Hiking up steep slopes, I rarely exceed 250 W myself, and typical hikers are going much slower. The 1,000-watt figure can only apply […]
- Humans
Letters from the February 9, 2008, issue of Science News
Small, or just invisible? “Heavy Find: Weighty neutron stars may rule out exotic core” (SN: 1/12/08, p. 20) says that the companion star of the pulsar PSR B1516+02B must be “tiny” because it cannot be seen. Isn’t it possible that the companion is made of dark matter? Is there a “wobble” test or other way […]
- Humans
Letters from the July 15, 2006, issue of Science News
People want to know “Sharing the Health: Cells from unusual mice make others cancerfree” (SN: 5/13/06, p. 292) reported that years ago it was discovered that certain male mice eradicate cancer cells and that white blood cells from these mice make normal mice cancer resistant. It also reported that it is superpremature to look forward […]
- Psychology
Beatles reaction puzzles even psychologists
From the February 29, 1964, issue: Psychologists are as puzzled as parents over the explosive effect the Beatles are having on American teen-agers.
- Space
Exoplanet oxygen may not signal alien life
Oxygen in an exoplanet atmosphere may come from water and ultraviolet light, not alien life.
- Science & Society
Flu drug research takes Intel STS top honors
A teenager’s computer analyses that identified six potential new flu-fighting compounds claimed first place at the 2014 Intel Science Talent Search.
- Health & Medicine
Whooping cough bounces back
A new type of pertussis vaccine introduced in the late 1990s may have led to the return of a disease that was nearly eradicated 40 years ago. Public opposition to vaccination hasn’t helped matters.
- Genetics
Bank voles provide clue to prion disease susceptibility
A protein from bank voles makes mice susceptible to disorders that wouldn’t otherwise infect them.
