News
- Astronomy
Spirograph in the sky
Some 2,000 light-years from Earth, an elderly star has ejected its outer layers to form a puffy, gaseous cocoon that resembles a "spirograph" pattern.
- Astronomy
Magnetic-mapping mission resurrected
The European Space Agency successfully launched Cluster II, a group of four spacecraft that will fly in tandem to generate a three-dimensional map of Earth's magnetosphere.
- Astronomy
Ulysses makes a return trip
Just as the sun has reached the stormy peak of its 11-year activity cycle, the European Space Agency's Ulysses spacecraft has begun its second and final pass over the sun's poles.
- Health & Medicine
Stem-cell transplant works on lupus
Severe lupus can be reversed with a transplant of the patient's own bone marrow stem cells, after they're allowed to mature outside the body, and medication that neutralizes self-attacking immune cells.
- Health & Medicine
Old polio vaccine free of HIV, SIV
Three laboratories analyzing remaining samples of polio vaccine used in the late 1950s find that none contains any human or simian immunodeficiency virus, or chimpanzee DNA—making polio vaccine unlikely to be the cause of the initial HIV outbreak in central Africa.
- Earth
Strange crystal birth found in mine
Deep in a Wisconsin mine, researchers have uncovered a new way for crystals to grow in nature.
- Earth
A late arrival for platinum and gold?
An extraterrestrial source may explain why Earth's mantle holds more platinum, gold, and certain other elements than it should.
- Physics
Electrons get a crack at the nucleus
As long suspected but never before shown, electrons orbiting an atom can directly excite the atom's nucleus.
- Physics
Hydrogen hoops give superfluid clues
Tiny rings of hydrogen molecules show signs of possible superfluid behavior, suggesting that helium might not be the only superfluid after all.
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Monkeys May Tune In to Basic Melodies
Simple tunes prove as memorable to rhesus monkeys as they do to people.
- Chemistry
Old Martian questions may have new answer
Researchers simulating Martian conditions in a test tube discover a likely reason why no organic molecules have yet been found on the surface of the Red Planet.
- Health & Medicine
Blood-cell transplants slow kidney cancer
A new transplant technique that uses blood transfusions from a sibling combined with decreasing doses of immune-suppressing drugs enables some patients to fight off advanced kidney cancer.
