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Showing results 41-51 of 65 for 'Environment'

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    The Active Life of Coral, Visualized

    As <em>Wired</em> reports, scientists at MIT and the Weizmann Institute took a close – very close – look at coral to better understand how it engineers its environment. The stunning graphic above, condensed from multiple microscopic images, shows the delicate motions of cilia, which move as ""the corals breathe, feed and clean themselves.""

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    The Dust Storm Microbiome

    Israel is subjected to sand and dust storms from several directions: northeast from the Sahara, northwest from Saudi Arabia, and southwest from the desert regions of Syria. The airborne dust carried in these storms affects the health of people and ecosystems alike. New research at the Weizmann Institute of Science suggests that part of the effect might not be in the particles of dust but rather in bacteria that cling to them, traveling many kilometers in the air with the storms. Some of these bacteria might be pathogenic – harmful to us or the environment – and a few of them also carry genes for antibiotic resistance.

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    Recipe Unearthed for Mystery Clouds

    The weather forecast had predicted a cloudless day, but when Ilan Koren, an atmospheric scientist, looked up he saw small “cotton wool” clouds dotted across the bright blue sky over Israel. “Mystery” clouds like these are common on hot sunny days along humid sub-tropical shores, like those along the Mediterranean. Yet classical physics suggests these clouds shouldn’t exist. Now scientists think they might have finally solved the puzzle of how mystery clouds are made.

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    Off Track: How Storms Will Veer in a Warmer World

    Under global climate change, the Earth’s climatic zones will shift toward the poles. This is not just a prediction; it is a trend that has already been observed in the past decades. The dry, semi-arid regions are expanding into higher latitudes, and temperate, rainy regions are migrating poleward. In a paper that that was recently published in Nature Geoscience, Weizmann Institute of Science researchers provide new insight into this phenomenon by discovering that mid-latitude storms are steered further toward the poles in a warmer climate. Their analysis, which also revealed the physical mechanisms controlling this phenomenon, involved a unique approach that traced the progression of low-pressure weather systems both from the outside – in their movement around the globe – and the inside, analyzing the storms’ dynamics.

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    Deadly Floods Will be the ‘New Normal’

    In warming climates, mid-latitude storms will travel further toward the poles before they reach their maximum intensity - and this, scientists say, will be the ‘new normal’. The study suggests that impacts on weather and climate will be strongest in regions close to the northeastern ocean boundaries, such as the UK and the US west coast.

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    A Bolt from the Brown: Why Pollution May Increase Lightning Strikes

    <em>Scientific American</em> reports on research by NASA and others showing that increased lightning occurs in places with more aerosols. Those findings were supported by analyses from Weizmann’s Prof. Ilan Koren and colleagues, who found that “more intense lightning is connected with aerosol sources over land.”