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Saturday, February 24, 2018

New, complex call recorded in Mariana Trench believed to be from baleen whale

A sound in the Mariana Trench notable for its complexity and wide frequency range likely represents the discovery of a new baleen whale call, according to the researchers who recorded and analyzed it.

Turfgrass research focuses on irrigation efficiency, drought tolerance

Subsurface drip irrigation is the newest method in turfgrass efficiency. Two projects will test these research findings: A subsurface drip irrigation system in several tee boxes at a golf course, and a city park, where a subsurface drip irrigation system has been installed on half of the park.

Studies of vulnerable populations get a ‘bootstrapped’ boost from statisticians

Researchers report on a statistical approach called 'tree bootstrapping' can help social scientists study hard-to-reach populations like drug users.

Eat and be eaten: Invasive scavengers in Hawaii alter island nutrient cycle

Invasive species on Hawaii Island may be especially successful invaders because they are formidable scavengers of carcasses of other animals and after death, a nutrient resource for other invasive scavengers, say investigators.

Kelp beats the heat

Using long-term ecological data, marine scientists evaluate the sentinel status of giant kelp during a recent marine heat wave.

Breakup of supercontinent Pangea cooled mantle and thinned crust

The oceanic crust produced by the Earth today is significantly thinner than crust made 170 million years ago during the time of the supercontinent Pangea, according to researchers. The thinning is related to the cooling of Earth's interior prompted by the splitting of the supercontinent. The findings give a more nuanced view of the mantle temperature that influences tectonics on Earth.

Scientists redefine horned dinosaur relationships by naming two new ceratopsian tribes

Scientists identify two new tribes of ceratopsian dinosaurs based on distinctions in frill ornamentation. These two tribes employed different strategies and lived side-by-side in the Late Cretaceous in what is now western North America.

What satellites can tell us about how animals will fare in a changing climate

From the Arctic to the Mojave Desert, terrestrial and marine habitats are quickly changing. Satellites are particularly well-suited to observe habitat transformation and help scientists forecast what animals might do next, suggest experts.

Researchers explain why feather shafts change shape when under stress

Researchers,for the first time, have revealed why the shape of the feather shaft changes from round to square when it's put under stress.

Sawdust reinvented into super sponge for oil spills

Oil spills could be cleaned up in the icy, rough waters of the Arctic with a chemically modified sawdust material that absorbs up to five times its weight in oil and stays afloat for at least four months.

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Syria war: UN Security Council approves 30-day ceasefire

Some of the biggest jihadist rebel groups, and their associates, are not covered by the truce. Source: BBC

Vicar of Dibley actress Emma Chambers dies aged 53

Dawn French and Hugh Grant among co-stars to pay tribute to the "loving" Vicar of Dibley actress. Source: BBC

La Casa Blanca acuerda divulgar el memo demócrata

La Comisión de Inteligencia de la Cámara de Representantes dio a conocer el sábado un memorando demócrata en forma redactada que busca refutar las acusaciones republicanas sobre abusos en la vigilancia realizada por el FBI Fuente: Cnnenespanol.com