Feature
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Health & MedicineDangerous History
The genome of the TB bacterium has small but significant pockets of diversity, giving scientists new targets for preventing and treating the disease.
By Emily Sohn -
PhysicsSpinning into Control
High-speed flywheels could replace batteries in hybrid vehicles and help make the electrical grid more reliable.
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Our Microbes, Ourselves
Trillions of microbes live in the human gut and skin, and they may be essential to health.
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AnimalsEgg Shell Game
Birds apparently cheat chance when it comes to laying eggs that contain sons or daughters.
By Susan Milius -
PhysicsThe Hunt for Antihelium
Scientists have been searching about 30 years for a single nucleus of helium made from antimatter, and although the discovery would imply that whole antimatter galaxies exist, the researchers' time could be running out.