The pope has made ecological concerns a hallmark of his nearly 3-year-old papacy, issuing a landmark encyclical earlier this year that paired the need to care for the environment with the need to care for humanity's most vulnerable.

The appearance of numerous large craters in Siberian permafrost has been attributed, at least by some, to the venting of large pockets of methane gas, possibly in a dramatic or sudden way. Chris Mooney | The Washington Post
Doctors soon realized they were dealing with the worst attack Paris had seen since World War II. By the time the siege ended, medical teams had attended to 302 patients, including many with life-threatening injuriesKaren Kaplan
Some of you will scoff at this childlike view of  refugees, which is so out of sync with the bellicose experts.Dermot Cole
Officials say the threat of an Islamic State operative slipping into the United States from Mexico is a real one: Last week, the FBI confirmed that five men from Pakistan and one from Afghanistan were captured near Arizona's border with Mexico, according to ABC affiliate KNXV.Peter Holley | The Washington Post
Worldwide efforts to reduce human emissions of sulfur dioxide and other aerosols have been a victory for environmental and public health advocates. But those pollutants also protect Arctic ice from solar heat. Yereth Rosen
Deep within the massive stone Jaguar Paw Temple at the ancient Mayan city of El Mirador in Guatemala, scientists have found the bones of the not-so-humble domestic turkey.Sarah Kaplan | The Washington Post
The top U.S. commander in Afghanistan, Gen. John F. Campbell, said Wednesday that several service members had been suspended from duty after an internal military investigation of the U.S. Rod Nordland
 Leaders in both Moscow and Ankara said Wednesday that they wanted to avoid ratcheting up the tensions between their countries after Turkey shot down a Russian warplane along the Syrian border, but the Kremlin was still weighing its options.Neil MacFarquhar
Ann Pickard, who took the reins of Shell's exploration efforts in Alaska's Arctic offshore waters after the company's troubled 2012 drilling season, will join the board of Houston-based construction company KBR in December and retire from Shell in February.Alaska Dispatch News