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Year in space put US astronaut’s disease defenses on alert
Nearly a year in space put astronaut Scott Kelly’s immune system on high alert and changed the activity of some of his genes compared to his Earth-bound identical twin, researchers said on Friday.
China's top steelmaking city issues 'orange' smog alert
China’s biggest steelmaking city, Tangshan, issued a second-level or ‘orange’ pollution alert for a wave of smog expected to blanket the region, a website run by the city government reported on Sunday.
Thousands flee as Bali raises volcano alert to highest level
A rumbling volcano on Bali could erupt at any moment, authorities warned Monday as they raised alert levels to maximum, accelerated a mass evacuation and closed the main airport, leaving thousands of tourists stranded on the Indonesian resort island.
Iranian police issue cyber security alert
Iran’s Cyber Police warn that the “ransomware,” which has affected countless computer systems worldwide, has reached some systems inside the country, urging pre-emptive measures to prevent it from spreading further.
Russian forces on alert, conduct drills
Russia began to implement measures to enhance combat readiness a day after Russian Defense Minister Sergei Shoigu put the air force on high alert following an order from President Vladimir Putin to ensure their combat competence.
Sierra Leone on alert after new W. Africa Ebola cases
Sierra Leone called for increased vigilance to prevent a resurgence of the Ebola virus after new cases in neighboring Liberia and Guinea, but cautioned against shutting off borders between the west African states.
Mexico City issues pollution alert
Mexico City's government ordered traffic restrictions and recommended people stay indoors due to serious air pollution, issuing its second-highest alert warning for ozone levels for the first time in 13 years.
Beijing pollution soars but no red alert
Parts of China's capital Beijing suffered air pollution more than 20 times recommended levels on Tuesday, but authorities refrained from issuing the highest smog alert.
US National Guard on alert for more Ferguson unrest
The US military is preparing to deploy to Ferguson, Missouri, in anticipation of fresh unrest ahead of a grand jury decision on whether to indict a white police officer who fatally shot an unarmed black teenager in August.

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