News
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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.
- Space
Sharpshooting Enceladus
Swooping within 49 kilometers of Saturn’s tiny, geologically active moon Enceladus, the Cassini spacecraft has pinpointed the locations of the icy geysers that erupt from the southern hemisphere of this wrinkled moon’s surface.
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- Archaeology
Saharan surprise
A chance discovery in the Sahara leads to the excavation of a Stone Age cemetery containing remains from two lakeside cultures.
- Ecosystems
Slave ants rebel
Species vulnerable to enslavement may evolve ways to fight their captors.
- Ecosystems
Coastal dead zones expanding
The number of coastal areas known as dead zones is on the rise. A new tally reports more than 400 of the oxygen starved regions worldwide.
