News
- Health & Medicine
Team locates anthrax-receptor protein
Scientists have identified the protein that enables the anthrax toxin to attach to cells and trigger disease, while another team has mapped the molecular structure of the toxin component that does most of the damage to cells.
- Paleontology
Fossils Indicate. . .Wow, What a Croc!
Newly discovered fossils of an ancient cousin of modern crocodiles suggest that adults of the species may have been dinosaur-munching behemoths that grew to the length of a school bus and weighed as much as 8 metric tons.
- Tech
Brain cells stay in focus as rats roam
So light that it doesn't weigh down a rat's head, a new microscope mounted over a hole in the awake animal's skull promises to open a window into individual neurons as a rat carries out normal activities.
- Tech
Natural micromachines get the points
In custom-made microscopic channels marked with arrows, mobile and thread-like cell structures called microtubules no longer wander aimlessly but slither in a fixed direction—a potential step toward tiny, man-made factories where cellular micromachinery churns out drugs or novel materials.
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Gene defect leads to warts and more
Scientists have found the gene for an immunodeficiency syndrome.
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DNA hints at origin of all language
A genetic study of African tribes suggests early language contained clicking sounds.
- Astronomy
Young stars shed light on young sun
If our own sun had been as active in its youth as is a group of young sunlike stars recently observed with the Chandra X-ray Observatory, it could account for the abundance of several isotopes, such as aluminum-26, calcium-41, and beryllium-10 found in meteorites.
- Astronomy
Asteroid studies reveal new puzzles
Belying the image of an asteroid as a bare rock, a detailed study of the asteroid 433 Eros reveals that many of its crater floors and depressions are coated with fine dust and nearly half of the largest rocks strewn across the asteroid's surface represent material blasted from a single crater.
- Astronomy
Moon plume breaks the record
The Galileo spacecraft has found the tallest plume seen so far on Jupiter's moon Io, the only volcanically active moon known in the solar system.
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Ant invaders strand seeds without rides
Invading Argentine ants may reshape the plant composition of the South African fynbos ecosystem because the newcomers don't disperse seeds.
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Rare sheep cloned from dead donor
An international team used cells from recently dead ewes of the rare mouflon sheep to clone a lamb.
- Chemistry
Milk protein does a membrane good
Chemical engineers have created a new type of durable membrane from whey protein, a natural component of milk.
