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AstronomyEnergy-Saving Space Engines: Black holes can be green
Some seemingly quiet black holes are actually efficient engines that emit jets of high-energy particles.
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This article refers repeatedly to black holes “swallowing matter and spitting out [or sending out] energy.” What really “spits out” or “sends out” anything is not the black hole itself, but the disk of gas that’s in the process of being mostly sucked irreversibly into the black hole. Bruce MoomawCameron Park, Calif.
By Science News -
EarthBrain Delay: Air pollutants linked to slow childhood mental development
Pollutants spewing from vehicles and power plants may be harmful to fetal brains.
By Ben Harder -
Nixing Malaria: DNA segment provides parasite resistance
A section of the mosquito genome appears to give the insects a natural resistance to malaria.