Report: NSA spying broke privacy rules many times (Update)

The National Security Agency has broken privacy rules or overstepped its legal authority thousands of times each year since Congress granted the U.S. intelligence agency broad new powers in 2008. In one case, telephone calls ...

Female frogs prefer males who can multitask

From frogs to humans, selecting a mate is complicated. Females of many species judge suitors based on many indicators of health or parenting potential. But it can be difficult for males to produce multiple signals that demonstrate ...

How DNA repair helps prevent cancer

The biological information that makes us unique is encoded in our DNA. DNA damage is a natural biological occurrence that happens every time cells divide and multiply. External factors such as overexposure to sunlight can ...

More car shoppers turn to mobile apps for the big purchase

If you're shopping for a car, your first stop may be your smartphone. As consumers grow increasingly comfortable buying smaller items such as clothes and concert tickets from their mobile devices, some are also using their ...

Humble plants may save the planet

Marine ecologists call them seagrass meadows. They once wrapped Australia's coastline providing sanctuary and food for dugongs and turtles, habitats for fish to breed and myriad other ecosystem services such as nutrient recycling ...

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