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Living-Cell Dialysis Works on
Dogs
A new kind of dialysis machine using live kidney cells from pigs effectively
filters blood in a test on dogs.
Last drop squeezed from recycled
tires
Borrowing from technology used to prepare cotton for ginning, scientists
have developed a machine that enables a much larger fraction of discarded
tiles to be recycled into useful products.
Dust from long ago made Leonid fireballs
Astronomers calculate that the fireballs witnessed early in last November's
Leonid meteor shower were the result of dust ejected by Comet Tempel-Tuttle
665 years ago.
Parasites make frogs grow extra
legs
Two new studies of frogs in western states give a big boost to parasites
as an explanation of the widespread deformities.
Does obesity trigger chronic inflammation?
Overweight people show symptoms of chronic, low-grade inflammation,
perhaps indicating early atherosclerosis.
More than one way to mutate a cell's DNA
Even if alpha particles, such as those in radon, don't hit a cell's
DNA directly, they can cause dangerous mutations by spawning free radicals,
which in turn damage DNA.
Getting to the root of protein production
Plants genetically engineered to secrete valuable proteins from their
roots may solve a biotechnology problem.
Plants signal stress with a toluene burst
Plants can emit toluene, a volatile organic compound previously thought
to come only from nonbiological sources, such as automobiles and factories.
Skate-ing to Extinction?
Some long-lived fish are facing accidental annihilation
The unintentional catch of slow-to-reproduce skates in fishing nets
threatens their survival and has prompted petitions to protect at least
one species.
Plate Tectonics . . . on Mars
Magnetic map reveals ancient activity on the Red Planet
Magnetic-field measurements suggest that Mars may have undergone massive
facelifts of its surface during its first half-billion years.
Astronomy
Black holes go middle class
Two teams of astronomers report the discovery of a new, intermediate-weight
class of black holes.
Life on Mars: Take two
The team that 3 years ago reported controversial evidence of tiny fossils
in an ancient meteorite from the Red Planet now describes possible fossils
embedded in two, considerably younger Martian rocks.
Biomedicine
Some fats may ward off colon cancer
Animal tests indicate that a group of unusual fats, found in many foods,
shows promise in preventing colon cancer.
Tuckered out by soccer? Try peanuts
Fat-enriched diets may help female soccer players and other endurance
athletes go the distance better than carbohydrate supplements do.
Mom's cells tied to autoimmune ills
Maternal cells can linger in a child's body for years after birth, sometimes
triggering autoimmune diseases in the child.
