29/09/2011

Twisted crystals point way toward active optical materials

(PhysOrg.com) -- A nanoscale game of "now you see it, now you don't" may contribute to the creation of metamaterials with useful optical properties that can be actively controlled, according to scientists at Rice University.

Mississippi mud: More water behind river's sediment rise

(PhysOrg.com) -- During the past several decades, upper Midwest state and local agencies have spent hundreds of millions of dollars on extraordinary conservation efforts to prevent the Upper Mississippi River from filling ...

Q&A: Amazon executive on Kindle Fire's 'amazing experience'

Amid a crowd of camera-wielding reporters and bloggers crowding around his Kindle Fire, Amazon.com Inc. Kindle Vice President Dave Limp answered a few questions about the new device at the company's launch event Wednesday.

Water supersaturation in the Martian atmosphere discovered

(PhysOrg.com) -- New analysis of data sent back by the SPICAM spectrometer on board ESA's Mars Express spacecraft has revealed for the first time that the planet's atmosphere is supersaturated with water vapour. This surprising ...

SpaceX says 'reusable rocket' could help colonize Mars

The US company SpaceX is working on the first-ever reusable rocket to launch to space and back, with the goal of one day helping humans colonize Mars, founder Elon Musk said Thursday.

Strength in numbers? For wolves, maybe not

(PhysOrg.com) -- Watching a pack of wolves surround and hunt down much larger prey leaves most people with the impression that social predators live in groups because group hunting improves the odds of a kill. But according ...

Companies try to put a dent in Netflix

It's been a tedious couple of months for Netflix subscribers, who have seen a service they adored transformed by a dramatic increase in prices, unbundling of streaming video from DVDs by mail, and vanishing content.

Women in science? Universities don't make the grade

Despite years of trying to improve the number of women undergraduates in science and engineering, a new study shows most universities are failing. Not only are women lagging behind their male classmates, efforts to close ...

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