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Showing results 21-31 of 41 for 'Earth'

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    Scientists Urge New Approaches to Plant Research

    Michigan State's Dr. Robert Last and Weizmann's Dr. Ron Milo write in Science that, as Earth's resources run out and the human population grows, we must turn to plants if we are to survive, including studying them in an interdisciplinary way.

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    Hints of Earth Splash a Saturnian Moon Landscape

    Titan is the only body in the solar system that has been found to have conditions, such as liquid and weather, similar to those on Earth. Dr. Oded Aharonson, formerly at Caltech and now at the Weizmann Institute, explains in The New York Times why Titan is so important.

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    Microbes Go, Too: ""Fecal Prints"" Provide Record of Life on Earth

    If it eats, it excretes – including microbes. Having digested organic matter on Earth for about 3.5 billion years, their waste contains a record of how our environment has changed. However, no one has been able to interpret the information in microbial ""fecal prints""– until now. Weizmann's Dr. Itay Halevy and McGill's Dr. Boswell Wing have cracked the case.

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    First Oceans May Have Been Acidic

    Looking back at the very earliest oceans, Dr. Itay Halevy found that they started off acidic and gradually became alkaline. His work sheds light on how levels of ocean acidity in the past were controlled by carbon dioxide in the atmosphere, an important process for understanding the effects of climate change, as today the oceans are again becoming acidic.

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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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    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.”

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    Making Larvae Count

    Prof. Rotem Sorek of the Weizmann Institute of Science; Prof. Roi Holzman of the School of Zoology and the Steinhardt Museum of Natural History, Tel Aviv University; and Dr. Moshe Kiflawi of Ben Gurion University have now produced a way to understand precisely which species of larvae are present in the water around reefs. Their study, which involved genetic “barcoding” of nearly all the fish species in the gulf between Eilat and Aqaba, not only showed which larvae were in the gulf, but how many of each were swimming around, at what time of year, and at what depths. This study was published in the journal Nature Ecology and Evolution.