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UN votes for arms embargo on Houthi rebels in Yemen

Security Council approves resolution to curb Shia militants’ campaign against supporters of country’s president, Abed Rabbo Mansour Hadi<p>The UN security council has approved an arms embargo targeting leaders of Yemen’s Shia Houthi rebels and their key supporters, former president Ali Abdullah Saleh …

South Asia

Hubble Revisits an Icon, the Pillars of Creation

Twenty years ago, the Hubble Space Telescope snapped one of its most iconic images ever. The three towering columns of gas bathed in the light of hot, young stars came to be called the Pillars of Creation — and they showed up on everything from t-shirts to coffee mugs to rugs. Now, to celebrate its …

The Best Science Books of 2014

On the heels of the year’s most intelligent and imaginative children’s books come the most stimulating science books published this annum. (Step into the nonfictional time machine by revisiting the selections for 2013, 2012, and 2011.)<p>1. THE ACCIDENTAL UNIVERSE<p><i>“If we ever reach the point where we</i> …

Astronomy

Why is the speed of darkness faster than the speed of light?

Michael Stevens explains why darkness moves faster than light in this new episode of Vsauce. I usually find these explainers interesting because they …

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Solar Chimneys Can Convert Hot Air to Energy, But Is Funding a Mirage?

Veteran balloonist is among those eyeing solar updraft towers as an alternative to traditional panels.<p><b>Chile's Atacama Desert is as eerily beautiful as it is barren, hot, and dry. Yet this seemingly inhospitable patch of Earth might be the perfect host for a different kind of solar energy, one that</b> …

What Will Happen When the Earth’s Magnetic Field Switches

The Earth's magnetic field protects life on Earth, shielding it from damaging radiation and moderating our climate. So the idea that it could …

How It Works: The Highest-Efficiency Solar Cell

I'm going to soak up the sun.<p>Solar cells typically convert no more than 20 percent of incoming energy into electricity, in part because they capture only certain wavelengths of light. Researchers at Germany’s Fraunhofer Institute for Solar Energy Systems have developed a solar cell that converts …

Clean Energy