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Monday, March 19, 2018

In bird feathers, scientists find hints about color of extinct animals

In order to discover the true colors of ancient animals, scientists are using X-rays to closely examine the chemical details of modern bird feathers. The researchers were able to map elements that make up pigments responsible for red and black colors in feathers. They hope to use this information to find traces of the same pigments in fossil specimens of extinct animals, such as dinosaurs. This latest discovery means that scientists may be able to go beyond monochrome in their depictions of fossilized creatures, and make steps towards portraying their colors more accurately.

Ice Man, Ötzi: A treacherous murder with links to Central Italy

The copper used to make Ötzi's axe blade did not come from the Alpine region as had previously been supposed, but from ore mined in southern Tuscany. Ötzi was probably not involved in working the metal himself, as the high levels of arsenic and copper found in his hair had, until now, led us to assume. His murder over 5,000 years ago seems to have been brought about due to a personal conflict a few days before his demise, and the man from the ice, despite his normal weight and active life-style, suffered from extensive vascular calcification.

Personal Health: After a Sprain, Don’t Just Walk It Off

Ankle injuries should never be taken lightly and are too often mistreated or not treated at all.

Personal Health: The Fats You Don’t Need to Fear, and the Carbs That You...

Efforts to correct past dietary sins have caused the pendulum to swing too far in the wrong direction.

Greenland rising as ice melts

A new study on the Greenland Ice Sheet provides valuable insight on climate change, using unique research methods to establish new estimates of ice loss for both modern and ancient times, says geologists.

Well: How Meditation Changes the Brain and Body

A new study suggests there’s some science behind the claims made for mindfulness meditation.

Melatonin, biological clock keep singing fish on time

In the 1980s, people living on houseboats in the San Francisco Bay were puzzled by a droning hum of unknown origin that started abruptly in the late evening and stopped suddenly in the morning. A lengthy investigation revealed the culprit: male plainfin midshipman fish (Porichthys notatus) that sing at night to attract mates. The fish, which can grow to 15 inches in length, live along the Pacific coast from Alaska to Baja, California.

Your Money: How to Pay for College With Less Stress

An adviser has a four-step plan to prepare for the financial gantlet that is your child’s college education.

Stronger turbine blades with molybdenum silicides

Molybdenum silicides can improve the efficiency of turbine blades in ultrahigh-temperature combustion systems, researchers have discovered.

Oxygen levels were key to early animal evolution, strongest evidence now shows

It has long puzzled scientists why, after 3 billion years of nothing more complex than algae, complex animals suddenly started to appear on Earth. Now, a team of researchers has put forward some of the strongest evidence yet to support the hypothesis that high levels of oxygen in the oceans were crucial for the emergence of skeletal animals 550 million years ago.

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The UK and EU agree terms for Brexit transition period

The deal is called a "decisive step" - but more work is needed on issues including Northern Ireland. Source: BBC

Russia election: Muted Western reaction to Putin victory

Western leaders are slow to send congratulations, and observers say there was no real choice for voters. Source: BBC

El silencio de Occidente ante el triunfo de Putin en Rusia y cuáles son...

China, Irán y tres países latinoamericanos están entre los países que felicitaron al presidente ruso, que estará otros seis años en el cargo, pero entre los líderes occidentales ha reinado el silencio tras las últimas tensiones con Moscú. Fuente: bbcmundo.com