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Almost all ice, from the ice cubes in your freezer to the hoarfrost seen on this glass, has the same hexagonal internal structure. It's why snowflakes have six arms. But the ice that scientists detail in the journal <em>Nature</em> is unlike anything seen before.

Scientists Discover A New Form Of Ice — It's Square

Researchers were surprised by what they found when they sandwiched a drop of water between two layers of an unusual two-dimensional material called graphene.

FBI Director Wades Into Contentious Debate Over Policing And Race

James Comey says the nation is at a crossroads when it comes to race and policing. He told students on Thursday that it's time for law enforcement and communities to face some hard truths.

Pope Francis leads the consistory at St. Peter's Basilica in Vatican City. In addition to 15 new electors, Pope Francis named five new cardinals who are over the age of 80 and, therefore, ineligible to vote in a conclave.

With New Cardinals, Pope Aims To Widen Horizons Of Church Leadership

In a formal ceremony, 20 prelates became princes of the Catholic Church. The new cardinals mark a shift in the church under Pope Francis toward poor nations — and away from Europe.

March Madness 2015: Winners And Losers

NPR's Tom Goldman talks to Don Gonyea about the latest upsets and advancements in the men's NCAA college basketball tournament. The women's tournament gets underway Friday, too.

Expert: Iran Has Territorial Ambitions

The U.S. and its international partners continue nuclear negotiations with Iran. NPR's Scott Simon speaks to Yale professor Stephen Carter about Iran's position in the Middle East.

Renewable energy sources — such as the Eolo wind park about 75 miles south of the Nicaraguan capital, Managua — generate about half of the country's electricity. Officials predict that figure could rise to 80 percent within years.

Nicaragua's Renewable Energy Revolution Picks Up Steam

A few years ago, Nicaragua was almost totally dependent on imported fuel. Now the country's fierce winds, sun and volcanoes generate nearly half the country's electricity, and perhaps 80 percent soon.

Floyd Mayweather Jr. (left) and Manny Pacquiao pose for photos after a news conference in Los Angeles. The two are scheduled to fight in Las Vegas on May 2.

Mayweather, Pacquiao Will Brawl For Boxing's Richest Purse Ever

The upcoming bout between Floyd Mayweather Jr. and Manny Pacquiao may or may not be the greatest of all time, but the two fighters are expected to take home at least $200 million combined.

<strong>Planet</strong>: bottom of a glass containing half-and-half, water and food coloring. <strong>Moons</strong>: bottom of a glass containing coconut milk, water and food coloring. <strong>Stars</strong>: salt, cinnamon, baking powder and Tums.

Behold! The Cosmos Created From The Contents Of A Kitchen

From spices, flour, milk, water and food coloring, a photographer creates startlingly realistic-looking images of space. These photos are convincing enough to impress an astrophysicist.

An actor performs during a March 9 rehearsal of <em>Singin' in the Rain</em> on the stage of the Theatre du Chatelet in Paris. American musicals were rarely performed in France in the past, but have been a huge hit in recent years.

Parisians Sing The Praises Of 'Singin In The Rain'

Until a few years ago, American musical theater was rarely performed in France. But it's become a huge hit, with Singin' in the Rain as the latest sold-out success.

Congressional Panels Probe Opiate Prescriptions At Wis. VA Hospital

Two congressional committees travel to the town of Tomah, Wis., on Monday to hold a hearing on the VA hospital there. The hospital has been singled out for over prescribing opiates to vets.

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