In win for Obama, top court revives cross-state air pollution rule
US Supreme Court upholds federal environmental regulation requiring some states to limit pollution contributing to unhealthy air in others
Thirsty Beijing to raise water prices in conservation push
China's water-stressed capital will introduce a new tiered pricing system to put more of the burden on heavy business users
Pro-Russian activists storm the regional government headquarters in Luhansk
Pro-Russian activists storm the regional government headquarters in Luhansk, eastern Ukraine, April 29, 2014. Hundreds of pro-Russian separatists seized the regional government headquarters in Luhansk on Tuesday, unopposed by police, underlining the lack of control of central government over swathes of eastern Ukraine. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
Pro-Russian activists storm the regional government headquarters in Luhansk
Pro-Russian activists storm the regional government headquarters in Luhansk, eastern Ukraine, April 29, 2014. Hundreds of pro-Russian separatists seized the regional government headquarters in Luhansk on Tuesday, unopposed by police, underlining the lack of control of central government over swathes of eastern Ukraine. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
Pro-Russian activists storm the regional government headquarters in Luhansk
Pro-Russian activists storm the regional government headquarters in Luhansk, eastern Ukraine, April 29, 2014. Hundreds of pro-Russian separatists seized the regional government headquarters in Luhansk on Tuesday, unopposed by police, underlining the lack of control of central government over swathes of eastern Ukraine. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
Pro-Russian activists storm the regional government headquarters in Luhansk
Pro-Russian activists storm the regional government headquarters in Luhansk, eastern Ukraine, April 29, 2014. Hundreds of pro-Russian separatists stormed the headquarters on Tuesday, gaining access by breaking windows and facing no resistance from police .REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
Pro-Russian activists storm the regional government headquarters in Luhansk
Pro-Russian activists storm the regional government headquarters in Luhansk, eastern Ukraine, April 29, 2014. Hundreds of pro-Russian separatists stormed the headquarters on Tuesday, gaining access by breaking windows and facing no resistance from police. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)