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Altered Antibody Boosts Transplants
A drug that binds to a signaling molecule in the immune system thwarts
transplant rejection in monkeys given new kidneys or pancreatic tissue.
New elements pop in, cousins may
linger
The discovery of two new elements, numbers 116 and 118, may soon lead
to the production of a rash of yet-undiscovered elements, including
some extraordinarily long-lived superheavy elements.
Prehistoric bacteria revived from
buried salt
By drilling into pockets of ancient seawater trapped in salt crystals,
scientists found—and then revived—bacteria that may be 250
million years old.
Streambed bugs eat gasoline pollutants
Microbes in stream sediment act as a natural filter for two gasoline
additives that pollute drinking water supplies.
Elderly show their emotional know-how
People become more adept at emotional regulation as they grow older,
despite the cognitive losses that occur with aging.
Controversy simmers at atomic-waste site
New findings intensify the debate over the stability of a proposed repository
for spent nuclear fuel in Nevada.
Besieged tadpoles send chemical alert
Tadpoles of red-legged frogs release ammonium when disturbed by predators,
warning other tadpoles of danger nearby.
Fibonacci at Random
Uncovering a new mathematical constant
Introducing an element of randomness into a common mathematical sequence
gives rise to a surprising relationship.
Son of Long-Horned Beetles
Scientists fight a wood-boring invader that could change the landscape
of North America
Investigators are exploring lures, testing pesticides, and listening
to the sounds of munching larvae eating through the hearts of trees.
Astronomy
A bunch of really cool objects
Two large sky surveys find six brown dwarfs—which are bigger than
planets and smaller than stars—at unusually low temperatures.
Exploring an accelerating universe
A spacecraft is proposed to determine unequivocally whether the universe
is expanding at an increasing rate.
Astronomical screw-ups
At a new Web site of imaging bloopers, novice observers can learn from
the mishaps of more experienced astronomers.
Biology
A toxin at the heart of Lyme disease?
The bacterium responsible for Lyme disease may produce a nerve-cell
toxin.
One small bacterial genome, to go
Scientists hold off on building a simple bacterium gene-by-gene so bioethicists
and religious scholars can weigh in on the idea.
DNA may reveal a fly's favorite eatery
A genetic analysis of the guts of sand flies may reveal from what animal
they pick up parasites that cause human illnesses.
British birds are nesting earlier
A warming climate has prompted birds in the United Kingdom to begin
laying eggs earlier in the spring.
British birds are moving a bit north
More than 40 species of British birds shifted their nesting ranges northward
by about 19 kilometers during the 1970s and 1980s.
Family life heats up for Mexican jays
Mexican jays in Arizona are starting families earlier in the spring
than they did 20 years ago.
Earth Science
The case of the missing carbon dioxide
Tropical deforestation may be emitting less carbon dioxide than previously
thought.
The stifling side of Asian exports
Chinese air pollution will boost concentrations of harmful ozone over
the United States.
