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The more carbon dioxide in the air, the more acidic oceans become – preventing oysters and tiny marine snails at the base of the food chain from forming shells.

The botched airstrike injured seven others. The violence marks the latest setback for a military that has been scrambling — and so far, failing — to reclaim the city from ISIS-linked militants.

Participants in the British show Eden spent a year in the remote Scottish highlands, living off their will and wits with cameras rolling. The only problem? No episodes have aired since August.

These birds fly from Europe to sub-Saharan Africa, but they don't touch down on the continent. Researchers say new findings raise questions about "when and to what extent swifts need to sleep."

EgyptAir Flight 181 was headed from Alexandria to Cairo but was forced to land in Cyprus. The hijacker claimed to have had explosives on board. Associated Press reporter Menelaos Hadjicostis explains.

The announcement comes after weeks of concern following a study of moss and air that found arsenic levels 159 times higher than is considered safe, and cadmium levels 49 times higher.

Health officials say the risk of cancer from some of the retailer's laminate floor products is three times higher than previously thought.

Lung surfactant coats tiny air sacs in the lung. Without it, every breath is a struggle, like blowing up millions of little balloons. With surfactant, breathing is as easy as blowing soap bubbles.

The international aid convoy reached Daraya less than a month after government forces turned away a previous delivery attempt.

The crisp and efficient thriller Non-Stop benefits from the intangibles that Liam Neeson brings to the role of a U.S. air marshal dealing with a nightmare scenario.