Environment

Pope Francis issued a call for social justice in a speech to world officials gathered at the United Nations on Friday. Degradation of the environment, he argued, hits the poor the hardest.

Chinese President Xi Jinping and President Obama agreed on at least one thing this week: They need to coordinate action to lower greenhouse gas emissions to combat climate change.

Arvind Thiruvengadam and colleagues at WVU got excited when they won a grant in 2012 to test emissions on a few diesel cars. He figured the data might result in some papers a few people might read.

Volkswagen CEO Martin Winterkorn abruptly resigned Wednesday, a few days after the company admitted it had rigged its diesel engine cars to pass emissions tests. The company faces multiple investigations and possibly billions of dollars in fines.

It's tough to see Jason deCaires Taylor's sculptures firsthand — unless you have scuba gear. Most of them rest under the sea. His latest work is fully visible only when the tide of the Thames recedes.