Uncategorized
- Animals
Secret Signal: Fish allurement that predators don’t see
In a rare demonstration of secret messaging in animals, a swordtail fish uses ultraviolet courtship signals that are invisible to a predator.
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By a Nose? Human sperm may sniff out the path to an egg
A man's sperm appear to possess a primitive kind of nose that enables them to navigate to a woman's egg by scent.
- Animals
At last, a bird that nails killer chicks
For the first time, researchers have found a bird species—Australia's superb fairy-wren—that reacts when all its own chicks disappear and a giant imposter takes their place.
- Earth
Dust up north
Strong northeasterly winds blowing across coastal regions of southern Alaska recently exposed by melting snow launched massive clouds of dust over the Gulf of Alaska.
- Astronomy
By the light of a starry eruption
Astronomers calculating the brightness of a supernova explosion witnessed in the 11th century estimate that it was likely the most brilliant stellar event in recorded history.
- Health & Medicine
Protein protects rat brains from strokes
Neuroglobin, a protein related to hemoglobin, may protect the brain during strokes.
- Earth
Undersea Mountain Descent
Join an international expedition in exploring an underwater mountain in the middle of the Atlantic Ocean. Twice-weekly dispatches highlight the scientific team’s findings for the duration of the expedition from Nov. 14 to Dec. 14. Hosted by the Scripps Institution of Oceanography, the expedition’s Web site also includes colorful diagrams illustrating various geological concepts and […]
- Chemistry
Artistic Elements
Providing an unusual perspective on the chemical elements, the Chemistry Societies’ Network presents a stunning visual tour of the elements (109 in all) as seen through the eyes of artists. Pick an element, from hydrogen to meitnerium, to see the image it suggested to an artist and, as a bonus, learn a little about the […]
- Earth
Energy-Saving Stars
This Web site documents progress in a program set up by the U.S. Department of Energy and Environmental Protection Agency to encourage companies to reduce the energy consumed by their products. More than 3,000 companies have participated in efforts to cut emissions of carbon dioxide and lower energy costs for consumers. Site visitors can find […]
- Planetary Science
Red Planet
The imaging team of NASA’s Mars Global Surveyor spacecraft has doubled the number of Mars pictures available to the public with the release of a new archive of photos. The archive contains all the pictures that were taken by Mars Global Surveyor from September 1999 through February 2000 and includes the images that were taken […]
- Physics
Origins at CERN
Starting on Nov. 11, the Exploratorium in San Francisco begins a series of Webcasts taking viewers to research laboratories around the world where scientists are investigating the origins of matter, the universe, Earth, and life itself. The first programs come from the European Organization for Nuclear Research (CERN) in Geneva, Switzerland, location of the world’s […]
- Humans
From the October 18, 1930, issue
alt=”Click to view larger image”> ARCHAEOLOGISTS FIND PATIENT PERUVIAN SURGEONS LOST One of the most interesting of the many ancient skulls that have been brought out of Peru bears what is probably the earliest known gauze compress–certainly the earliest surgical dressing of the kind that has been discovered on this continent. The bold cranial surgery […]
