Scientists are learning that some astronauts' eyes change shape after time in space, leading to vision problems. But a sleep sack being developed might offer relief.
Vladimir Kara-Murza, a critic of Russian President Vladimir Putin, tells NPR only the Kremlin's intelligence services could be responsible for his unexplained illnesses.
Preval has a mixed legacy. He was recognized as a hard worker, but widely criticized in his second term for what was seen as a weak and absent response to Haiti's devastating 2010 earthquake.
The artist, who lost most of his family to the Holocaust when he was young, founded the auto-destructive art movement. He explored how destruction could become an act of creation and dissent.
Officials in Zimbabwe, which faced a severe drought last year, have declared a national disaster and appealed to international donors for $100 million to help flood-stricken areas.
Ivory coast is the world's largest cocoa producer. But a bumper crop combined with a fall in the global demand for chocolate and a dip in cocoa prices are hurting the country's cocoa farmers.
The U.S. military has been waging periodic drone strikes against al-Qaida in Yemen for years. A series of airstrikes and a ground raid have intensified the campaign over the past month.
U.S. emissions of smog-forming pollutants have dropped, but smog levels in the western U.S. have increased each year. Now, researchers say, they've found out why — it's wafting from across the Pacific Ocean.