Climate scientists struggle to explain warming slowdown

Climate scientists struggle to explain warming slowdown | Reuters:
"My own confidence in the data has gone down in the past five years," said Richard Tol, an expert in climate change and professor of economics at the University of Sussex in England.
Swedish chemist Svante Arrhenius first showed in the 1890s how man-made carbon dioxide, from coal for instance, traps heat in the atmosphere.
Many of the exact effects are still unknown.
Greenhouse gas emissions have hit repeated record highs with annual growth of about 3 percent in most of the decade to 2010, partly powered by rises in China and India.
World emissions were 75 percent higher in 2010 than in 1970, UN data show."