News
- Space
Little middle ground for black holes
Black holes may not come in mid-sized versions. Astronomers expecting to find one in a galaxy cluster found a tiny black hole there instead.
- Earth
Carbon caveat
Adding carbon compounds to some ocean systems may lead to a counterintuitive drop in their overall carbon content — and how much carbon dioxide the ocean could store.
- Health & Medicine
Dopamine fends off zzzzz’s
A reward chemical in the brain helps keep sleep-deprived people awake.
- Physics
Short-lived particle questions long-lived theory
In sifting through the ashes of a short-lived subatomic particle called the kaon, physicists are slowly accumulating new hints that the theory of elementary particles might one day have to be modified.
- Chemistry
FBI reveals more details of anthrax investigation
A panel of scientists involved in the anthrax investigations released new details.
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- Earth
Carcinogens from car exhaust can linger
Free radicals similar to those in cigarette smoke may form when car exhaust cools off, and may persist indefinitely in the air.
- Space
Tiny object points to remote solar system reservoir
Possible comet may be distant visitor from the innermost region of the Oort Cloud, the proposed comet reservoir of the outermost solar system.
- Health & Medicine
Immune cells show long-term memory
Survivors of the 1918 Spanish flu pandemic still make antibodies against the virus, revealing a long-lived immunity previously thought impossible.
- Space
The great planet debate
New suggestions for defining a planet would put Pluto back on the list. Scientists discuss the International Astronomical Union’s definition during the Great Planet Debate Conference.
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- Physics
Stars ablaze in other skies
A new study suggests that a surprising number of universes, even those with laws of physics different from those in our universe, can still support stars.
