Mountain lions are slowly making a comeback, but they live at constant risk of getting hit by cars or shot. In Santa Cruz, Calif., one project tracks how the lions live — and it's already helping to protect the big cats nationwide.
Scientists and growers are in a bitter fight against citrus greening, a disease that has devastated Florida's orange and grapefruit crops. They fear that unless scientists find a cure for greening soon, it's just a matter of time before economic realities and the disease force growers out of business.
Only a rare few people have the ability to remember everything that happened in their lives. But that gift can seem like a curse, they say, keeping them marooned in the past and unable to enjoy the present. Forgetting, it seems, can be a good thing.
A federal judge in New York ruled Friday that the National Security Agency's huge telephone data collection program is legal. In a written opinion, U.S. District Judge William Pauley said the program is a valuable tool to combat terrorism specifically because the records collection is so broad.
Anyone who has waited endlessly at a red light at an empty four-way intersection knows traffic signals are not the most efficient way to keep traffic flowing. Computer scientists have figured out a way to utilize the space in intersections far more efficiently. The problem is the solution will have to wait for a day when cars can drive themselves.
The U.S. Fish and Wildlife Service is proposing to take the gray wolf off the endangered species list. The wolf had been extirpated from the West and had dwindled most other places in the U.S. The great canine has rebounded since it was reintroduced to the northern Rockies in the 1990s and is continuing to spread into the Pacific Northwest. But biologists warn that if these wolves loses federal protection, they will not be able to return to some places, such as Colorado, where the ecosystem sorely needs them.
As baby boomers retire and drilling increases, energy companies are hiring, adding 23 percent more workers between 2009 and 2012. But the hiring spree has come with a terrible price: Last year, 138 workers were killed on the job, twice as many as in 2009.
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