"President Obama and the leaders of five Nordic countries agreed Friday to environmental protections for the Arctic that could restrict oil and gas drilling and other commercial activity there."

"April 2016 was the hottest April on record globally – and the seventh month in a row to have broken global temperature records."

"Scientists say the near-destruction of Fort McMurray last week by a wildfire is the latest indication that the vital boreal forest is at risk from climate change."

"Experiments using lab mice show how the Zika virus travels through the bloodstream, multiplies in the placenta and invades the brain of the developing fetus, stunting growth or causing death, researchers said Wednesday."

"Outdoor air pollution has grown 8% globally in the past five years, with billions of people around the world now exposed to dangerous air, according to new data from more than 3,000 cities compiled by the World Health Organisation (WHO)."

"North-east Atlantic mackerel has won back its status as a sustainably managed fish stock - after losing it at the height of the “mackerel war”."

"Alberta's unusually early and large fire is just the latest of many gargantuan fires on an Earth that's grown hotter with more extreme weather."

"Pregnant women who’ve traveled to Latin America and the Caribbean are advised to be tested for the Zika virus afterward. But medical researchers have discovered there’s a problem with that advice: Some diagnostic tests will return positive results even when a person hasn’t contracted Zika."

"The dismissal of Ali al-Naimi as Saudi Arabia’s oil minister puts the country’s deputy crown prince firmly in control of energy policy and makes an agreement to freeze oil production less likely when the Organization of the Petroleum Exporting Countries meets next month, OPEC officials said."

"Leopards are reclusive and known for their ability to adapt, traits that have led some wildlife biologists to assume that the animals remained relatively abundant in the wild. But a study published Wednesday suggests that leopards have lost as much as 75 percent of their historical range since 1750."