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الطاقة تصعد إلى الضعف.. اكتشاف ألماني يمهد لثورة في كفاءة الخلايا الشمسية

تمكن باحثون من رصد تفاعل جزيئي فائق السرعة يتيح مضاعفة الطاقة المنتجة من كل فوتون ضوئي عبر "انشطار الإكسيتون"، وهو ما يقدم حلا جذريا لمشكلة الهدر الحراري وربما يمهد لثورة في هذا النطاق.

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Indonesia Haze Spikes Singapore Pollution, Shuts East Timor Schools

Air pollution in part of Singapore hit the country's "very high" band on Wednesday, while East Timor shut schools, as haze from forest fires raging in Indonesia causes a regional crisis. The blazes in Indonesia have burned through hundreds of thousands of hectares of forest and plantations, sickened local residents and sent thick haze across the region. Air pollution in western Singapore on Wednesday hit "very high" -- the country's top level -- the National Environment Agency said.

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As Species Decline, Green Turtles Offer Glimmer of Hope

The palm-sized green turtle hatchling flailing through the sand on a Malaysian island may seem vulnerable, but its species has emerged as a symbol of hope for wildlife conservation. Green turtles have made the rare jump from endangered to "least concern" in global conservation rankings, a remarkable success when many species are declining. Conservation NGO World Wildlife Fund (WWF), in its biannual Living Planet Report released Thursday, found a 73-percent decline in the average size of monitored wildlife populations over 53 years.

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