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Predator-prey interactions are often viewed as evolutionary arms races; while predators improve their hunting behaviors and their ability to sneak up on their prey, the prey improve upon their abilities to detect and escape from their predators. The problem, of course, is that there is a trade-off between maintaining vigilance – the attention necessary to be consistently aware of others in the environment takes quite a bit of physical and mental energy – and doing all the other things that an animal must do, such as finding its own food.

Who's been munching my galaxy? Right now, all across the planet, millions of people are engaged in a struggle with enormous implications for the very nature of life itself. Making sophisticated tactical decisions and wrestling with chilling and complex moral puzzles, they are quite literally deciding the fate of our existence.

What was he thinking? An All State insurance ad [More]

A little more than three years ago a medical team from Berlin published the results of a unique experiment that astonished HIV researchers. The German group had taken bone marrow--the source of the body’s immune cells--from an anonymous donor whose genetic inheritance made him or her naturally resistant to HIV.

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Our earliest invertebrate ancestors did not have brains. Yet, over hundreds of millions of years, we and other vertebrates have developed amazingly complicated mental machinery

By Richard Valdmanis and Simon Akam FREETOWN/DAKAR (Reuters) - On a recent mission pursuing pirate fishermen off Sierra Leone's coast, the head of the Fisheries Protection Unit found himself adrift on the high seas with six crew after their rented motorboat ran out of fuel. "We started rationing the food and water," Victor Kargbo said

It seems unlikely that the maker of hundred-million-dollar Hollywood blockbusters such as Armageddon and The Transformers could inspire scientists to develop an ultralow-cost tool for quickly sensing airborne chemical weapons . Yet one former University of Michigan at Ann Arbor (U.M.) researcher says his idea to use a nerve-gas antidote to create an inexpensive litmus paper–like nerve-gas sensor emerged shortly after watching The Rock on DVD a few years ago.

The average price for a gallon of gas in the U.S.

Yoga and relaxation practices have been around for thousands of years. And modern research suggests that yoga could have a very real impact on many stress-related illnesses, including anxiety, depression and heart disease. [More]

AUSTIN, Texas Just two companies Verizon Wireless and AT&T control 60 percent of the U.S. wireless market. Four companies control 90 percent.

Previous studies have vastly underestimated the carbon footprint of the Canadian oil sands by not considering the industry's impact on peatlands, according to new research. [More]

It’s been a rough year for Western Australia’s iconic but endangered Carnaby’s black cockatoos ( Calyptorhynchus latirostris ), which are endemic to the state and live nowhere else in the world.

By Eric Hand of Nature magazine Who would have thought that a ringside seat at some of the Universe's most extreme events could come cheap? But by the standards of space-based astronomy, the NuSTAR telescope that NASA plans to launch as early as this month has a modest budget, US$165 million. [More]

An active severe weather season is anticipated in the U.S. during spring of 2012 with the most widespread warmth since 2004. [More]