Changbai Mountain volcano is China's least stable. Geologists are closely monitoring it following the earthquake that hit Japan on March 11 and increasing volcanic eruptions around the world.
Teenagers who have irregular periods are more likely to be overweight and obese and to have early warning signs of diabetes and heart disease than those with regular menstrual cycles, a study said.
A spacewalking astronaut ran into trouble Sunday while trying to lubricate a joint in the life-sustaining solar power system of the International Space Station, losing one bolt and getting a washer stuck in a crevice.
NASA astronaut Andrew Feustel works outside the International Space Station during the space shuttle Endeavour's first spacewalk in support of construction and maintenance of the orbiting laboratory in this photograph provided by NASA and taken May 20, 2011.
NASA says the gash in space shuttle Endeavour's belly poses no safety concern.
Iceland's most active volcano has started erupting, scientists said Saturday - just over a year after another eruption on the North Atlantic island shut down European air traffic for days.
A man left paralyzed after a car accident was able to stand and take steps after electrical stimulation of his spinal cord in what researchers described as a breakthrough in treating such devastating injuries.
South Korea has opened what it says is the ultimate eco-friendly business centre, a construction that emits zero carbon and uses only renewable energy, in a project to underline the government's commitment to reduce greenhouse gases.
One in every 25 teens reported an "irresistible urge" to be on the Internet, tension when they weren't online, or said they had tried to quit or cut down on Internet time.
New Zealand scientists believe they have discovered two previously unknown species of fish during an expedition to the remote Kermadec islands in the south Pacific.
Researchers commissioned by Roman Catholic bishops in the US to analyze the pattern of clergy sex abuse have concluded that homosexuality, celibacy and an all-male priesthood did not cause the scandal.
After Rob Summers was paralyzed below the chest in a car accident in 2006, his doctors told him he would never stand again. They were wrong.
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