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First Direct Proof of Hofstadter Butterfly Fractal Observed in Moiré Superlattices
May 15, 2013 — Scientists have directly observed a rare quantum effect that produces a repeating butterfly-shaped energy spectrum, confirming the longstanding prediction of this quantum fractal energy structure ... > full story -
Billion-Year-Old Water Could Hold Clues to Life on Earth and Mars
May 15, 2013 — Scientists have discovered ancient pockets of water, which have been isolated deep underground for billions of years and contain abundant chemicals known to support life. This water could be some of ... > full story -
Fall Warming on Antarctic Peninsula Driven by Tropically Forced Circulation
May 15, 2013 — New research shows that, in recent decades, fall is the only period of extensive warming over the entire Antarctic Peninsula, and it is mostly from atmospheric circulation patterns originating in the ... > full story -
Significant Improvement in Performance of Solar-Powered Hydrogen Generation
May 15, 2013 — Using a powerful combination of microanalytic techniques that simultaneously image photoelectric current and chemical reaction rates across a surface on a micrometer scale, researchers have shed new ... > full story -
Helping Forests Gain Ground on Climate Change
May 15, 2013 — Researchers in Canada have developed guidelines being used by foresters and the timber industry to get a jump on climate change when planting ... > full story -
Making Frequency-Hopping Radios Practical
May 15, 2013 — New hardware could lead to wireless devices that identify and exploit unused transmission frequencies, using radio spectrum much more ... > full story -
Groundwater Unaffected by Shale Gas Production in Arkansas
May 15, 2013 — A new study finds no evidence of groundwater contamination from shale gas production in ... > full story -
Friction in the Nano-World: Physicists Discover a New Kind of Friction
May 15, 2013 — Whether in vehicle transmissions, hip replacements, or tiny sensors for triggering airbags: The respective components must slide against each other with minimum friction to prevent loss of energy and ... > full story -
Warming in Central China Greater Than Most Climate Models Indicated
May 15, 2013 — New data from Central China reveal that temperatures have risen 10 to 14 degrees Fahrenheit over the last 20,000 years in this region, an increase two to four times greater than what many scientists ... > full story -
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Engineers Design, Test Taller, High-Strength Concrete Towers for Wind Turbines
May 15, 2013 — Engineers have designed and tested a concept for concrete towers to replace the steel towers used for wind turbines. The concrete towers could be a practical way to raise turbine towers from today's ... > full story
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