- Meteorite may represent 'bulk background' of Mars' battered crust
- Heat waves becoming more prominent in urban areas, research reveals
- Why do zebras have stripes? Temperature counts
- Crystal light: New family of light-converting materials points to cheaper, more efficient solar power and LEDs
Posted: 30 Jan 2015 11:23 AM PST
Posted: 30 Jan 2015 07:25 AM PST
The world's urban areas have experienced significant increases in heat waves over the past 40 years, according to new research. These prolonged periods of extreme hot days have significantly increased in over 200 urban areas across the globe between 1973 and 2012, and have been most prominent in the most recent years on record.
Posted: 30 Jan 2015 06:29 AM PST
Posted: 29 Jan 2015 02:03 PM PST
Engineers have shone new light on an emerging family of solar-absorbing materials that could clear the way for cheaper and more efficient solar panels and LEDs. The materials, called perovskites, are particularly good at absorbing visible light, but had never been thoroughly studied in their purest form: as perfect single crystals. Using a new technique, researchers grew large, pure perovskite crystals and studied how electrons move through the material as light is converted to electricity.
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