Dark matter, which surrounds most galaxies, plays a key role in the structure of the cosmos. But we can't see it. Or can we? Recently, astronomers used a remarkable effect predicted by Einstein to spot a very tenuous bridge of dark matter linking two galaxy clusters.
Bassem Samaan of Bethlehem, Pa., is on a quest to save rare varieties of figs often growing unnoticed, right under our noses in neighbors' backyards. He's donated some of his finds to a government-backed fruit tree preserve in California.
The Fair Labor Association has released a report documenting improvements in working conditions at three huge factories in China that make some of Apple's most popular products — like the iPhone and the iPad. The factories are owned and run by Foxcon, and they employee hundreds of thousands of workers.
A federal court has rejected a rule that would have regulated air pollution that blows from one state to the next. The ruling puts a damper on the Obama administration's efforts to reduce asthma, heart disease and other ailments related to air pollution. States and utilities asserted that the rules overstepped the EPA's authority under the Clean Air Act.
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