Pbxs Secret of Plant Geometry Revealed
In temperate latitudes, the right timing is crucial for almost all living things: Plants sprout with the advent of spring, bees know the best times to visit flowers, people get tired in the evening and wake up again in the morning. The constant change between light and dark, day and night is the rhythm to which all living beings must adapt if they want to survive and reproduce. Circadian clocks help them achieve this by regulating the timekeeping mechanism in each organism and adjusting it to changes.But what happens in environments where the day-and-nigh
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t cycle no longer follows the typical 24-hour rhythm as in the polar regions, when twilight is directly followed by dawn or when the sun is low above t
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he horizon only for a few hours each day? Scientists from the Department of Neurobiology and Genetics of the University of W眉rzburg have looked into these questions; Dr. Pamela Menegazzi was in charge of the study. The team has
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published its results in the latest issue of Current Biology KUNDUZ:Afghan security forces drove Taliban fighters back from Kunduz city Friday, officials said, as the insurgents began the 2016 fighting season by targeting the northeastern provinc
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ial capital they briefly captured last year.Fighting took place within city limits as well as in six provincial districts, Kunduz governor Asadullah Omarkhil said in a video statement."Fortunately they have faced defeat by the Afghan security forces," he said, adding that 30 insurgents were killed and 20 wounded within the city's limits.Pakistan renews talks offer to Afghan Taliban"At the moment, the security situation is absolutely norma
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l," he said."They dreamed of capturing the city of Kunduz, but they faced a jaw-breaking answer from Afghan forces."The Taliban left security forces reeli
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ng with their brief takeover of Kunduz late last year, their biggest victory since they were toppled from power in 2001.On Tuesday the insurgents announced the start of the "spring offensive" even as the government in K