The world's forests are at risk of becoming a source of planet-warming emissions instead of soaking them up like a sponge unless greenhouse gases are controlled, scientists said.

Deforestation emits 20 percent of the world's carbon dioxide when people cut and burn trees, but standing forests soak up 25 percent of the emissions.

Venezuela was hit by a 4.3 magnitude earthquake, authorities said on Sunday, though there were no reports of damage or harm to the OPEC nation's oil industry.

"Fortunately we have no reports of damage. We know many people are evacuating residences, overall in Caracas, we call on them to stay calm," Interior Minister Tarek El Aissami said in an interview with state television.

Marijuana to cancer: Scientists in Seattle have found that young men smoking marijuana were at a higher risk of developing an aggressive form of testicular cancer called nonseminoma than those who had never tried the drug. The disease is known to strike men in there 20s and 30s and is the most common type of cancer among men in the UK, the researchers said. The study, published in the journal

A new research has predicted that global warming will have a devastating effect on the Amazon rainforest, shrinking it by 85% if there is a rise of 4