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Thursday, July 6, 2017

Ecology & Geology

Rising carbon dioxide in atmosphere also speeds carbon loss from forest soils
Elevated levels of atmospheric carbon dioxide accelerate carbon cycling and soil carbon loss in forests, new research led by an Indiana University biologist has found.

Climate change may lead to fewer but more violent thunderstorms
Researchers are working to identify exactly how a changing climate will impact specific elements of weather, such as clouds, rainfall, and lightning. A Tel Aviv University researcher has predicted that for every one degree Celsius of warming, there will be approximately a 10 percent increase in lightning activity.

BESC researchers tap into genetic reservoir of heat-loving bacteria
The identification of key proteins in a group of heat-loving bacteria by researchers at the Department of Energy's BioEnergy Science Center could help light a fire under next-generation biofuel production.

NRL scientists track individual raindrops inside clouds
Naval Research Laboratory (NRL) scientists are leading a multi-agency study which reveals that a very high-resolution Doppler radar has the unique capacity to detect individual cloud hydrometeors in the free atmosphere. This study will improve scientists' understanding of the dynamics and structure of cloud systems.

University of Florida astronomer reports rare case of gravitational lensing
You could say that the odds of seeing it were astronomical. Yet there it was, 10 billion light-years from Earth, the most massive galaxy cluster ever seen at such a distance - with a gravity field so strong that it distorted the light of the galaxy behind it in a rare display called gravitational lensing.

Tell-tale El Niño signal detectable 18 months ahead
The origins of the El Niño climatic events that usually bring extended hot, dry conditions to much of Australia are detectable up to 18 months beforehand, a new study has found.

Evidence of oceanic 'green rust' offers hope for the future
A rare kind of mineral which scientists hope could be used to remove toxic metals and radioactive species from the environment played a similar, crucial role early in Earth's history.

In Israel's Negev Desert, a plant called sweet mignonette or taily weed uses a toxic "mustard oil bomb" to make the spiny mouse spit out the plant's seeds when eating the fruit. Thus, the plant has turned a seed-eating rodent into a seed spreader that helps the plant reproduce, says a new study by Utah and Israeli scientists.

Warm climate - Cold arctic?
The Eemian interglacial period that began some 125,000 years ago is often used as a model for contemporary climate change. In the international journal "Geophysical Research Letters" scientists from Mainz, Kiel and Potsdam (Germany) now present evidence that the Eemian differed in essential details from modern climatic conditions.

Today's climate more sensitive to carbon dioxide than in past 12 million years
Until now, studies of Earth's climate have documented a strong correlation between global climate and atmospheric carbon dioxide; that is, during warm periods, high concentrations of CO2 persist, while colder times correspond to relatively low levels.

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