"Experts are warning that the public dangerously underestimates the health risks linked to smoking cannabis."

"LONDON -- Drug-resistant strains of gonorrhea have spread to countries across the world, the United Nations health agency said on Wednesday, and millions of patients may run out of treatment options unless doctors catch and treat cases earlier."

"Human activity is affecting Earth in many ways, but a new study suggests that continued population growth and its impact on climate and ecology could trigger a more profound chain reaction of effects within little more than a decade."

"A senior Chinese official demanded on Tuesday that foreign embassies stop issuing air pollution readings, saying it was against the law and diplomatic conventions, in pointed criticism of a closely watched U.S. embassy index."

"BAGHDAD -- Despite sectarian bombings and political gridlock, Iraq’s crude oil production is soaring, providing a singular bright spot for the nation’s future and relief for global oil markets as the West tightens sanctions on Iranian exports."

"Chagas disease, a tropical illness that is transmitted by biting insects, may pose a major unseen threat to poor populations in the Americas and Europe, according to a report published May 29 in the journal PLoS."

"LONDON -- Plants and shrubs have colonised parts of the Arctic tundra in recent decades growing into small trees, a scientific study found, adding the change may lead to an increase in global warming pressures if replicated on a wider scale."

"UNITED NATIONS -- A five-year report out [Thursday] from a U.N. refugee agency goes to great lengths to say climate change is likely to increase human displacement among nations. What is less clear in the report is what can be done about it."

"U.S. crude oil futures fell on Friday for the fourth day in a row, hitting their lowest levels in nearly eight months and extending losses to a fifth week, as weak U.S. jobs data, soft Chinese manufacturing and the deepening euro zone crisis sparked a broad market selloff. "

"Chinese manufacturers of towers for wind turbines received unfair subsidies and must now pay duties of 13.7 to 26 percent, the Commerce Department said on Wednesday in a preliminary decision in a case brought by four American manufacturers of the towers. The decision, the third trade case decided this year in favor of American wind and solar manufacturers, will be followed by another in the coming weeks on whether Chinese companies engaged in dumping the towers in the United States at prices below the cost of making them."