Ken Caldeira of the Carnegie Institution for Science takes a water sample during his experiment out on part of the Great Barrier Reef. The water is slightly pink because his team is using a dye to trace an acid-neutralizing chemical as it flows across the reef.
Credit Richard Harris / NPR
NPR Science Correspondent Richard Harris traveled to Australia's Great Barrier Reef to find out how the coral reefs are coping with increased water temperature and increasing ocean acidity, brought about by our burning of fossil fuels. Day 4: Richard catches up with one of the gurus of climate science out on the reef.
Ken Caldeira loves a challenge, and he has a big one right under his feet. He's standing on an expanse of coral reef out in Australia's Great Barrier Reef. It's being washed with water as the tide streams over the reef, from a lagoon to the open sea.
Originally published on Tue March 26, 2013 12:03 pm
A towel covers the face of a man in a geriatric day care facility of the German Red Cross at Villa Albrecht in Berlin.
Credit Carsten Koall / Getty Images
What you do while you're asleep may say something about your cognitive function later in life.
Here's why. Mayo Clinic researchers report that having a condition called REM sleep behavior disorder, in which you act out dreams in your sleep, appears to be a harbinger for something called Lewy body dementia years later — at least in men.
Originally published on Fri March 22, 2013 10:34 am
Siyani Chambers and Laurent Rivard of the Harvard Crimson celebrate as the Crimson defeat the New Mexico Lobos 68-62 during the the 2013 NCAA Men's Basketball Tournament on Thursday in Salt Lake City, Utah.
Credit Harry How / Getty Images
The NCAA tournament got off to a stunning start on Thursday: Harvard, known more for its brains and seeded No. 14, sent No. 3 New Mexico packing with a 62-68 win.
Chinese President Xi Jinping lays a wreath at the Tomb of the Unknown Soldier in Moscow on Friday.
Credit Kirill Kudryavtsev / AFP/Getty Images
Newly installed Chinese President Xi Jinping is following in his predecessor's footsteps by making Russia his first official trip abroad.
The visits by Xi and Hu Jintao before him (in 2003), both meeting with Russian President Vladimir Putin, reinforce how the Cold War rivals have grown closer as they seek to counter U.S. influence in Asia and Europe.
An employee of Cyprus Laiki (Popular) Bank reacts as he takes part in a protest outside Parliament on Friday in the capital, Nicosia.
Credit Patrick Baz / AFP/Getty Images
As a deadline on Cyprus to come up with a financial bailout plan nears, a possible rescue from Russia looks to have fallen apart, leaving the island nation few options for staving off default.
Russian Finance Minister Anton Siluanov said as far as Moscow was concerned "the talks have ended," but Prime Minister Dmitry Medvedev left the door open, saying aid from Moscow would be contingent on Cyprus gaining European Union backing for its other money-raising ideas.
Originally published on Sun March 24, 2013 9:24 am
President Barack Obama pays his respects in the Hall of Remembrance in front of Israel's President Shimon Peres, Israel's Prime Minster Benjamin Netanyahu, Chairman of the Yad Vashem Directorate Avner Shalev and Rabbi Yisrael Meir Lau after marines layed a wreath on his behalf during his visit to the memorial on Friday.
Credit Uriel Sinai / Getty Images
President Obama wrapped up his trip to Israel and the West Bank on Friday with visits to three symbolic pilgrimage sites: First he laid a stone on the grave of Theodor Herzl, the father of modern Zionism, then he laid a wreath and a stone on the grave of Yitzhak Rabin, the Israeli leader assassinated in 1995. Finally, Obama made a somber visit to the Holocaust memorial Yad Vashem.