Dramatic and unprecedented plumes of methane – a greenhouse gas 20 times more potent than carbon dioxide – have been seen bubbling to the surface of the Arctic Ocean by scientists undertaking an extensive survey of the region.

The scale and volume of the methane release has astonished the head of the Russian research team who has been surveying the seabed of the East Siberian Arctic Shelf off northern Russia for nearly 20 years.

The proportion of the world’s population with access to improved drinking water sources grew by 10 percent over a period roughly covering the past two decades, according to a United Nations study released Tuesday.

The study was released by the United Nations Children’s Fund (UNICEF) and UN World Health Organization (WHO).

The study found that between 1990 and 2008, the proportion of the world’s population with access to improved drinking water sources increased from 77 per cent to 87 percent.

We are right on the equator, and Speke, Moebius, Elena, Savoia and Moore, the five great glaciers of the the Rwenzori, the Mountains of the Moon, glint in the bright Ugandan sun. Usually lost in the mists that cloak these peaks up to 5,100 metres high, the glaciers are the only major ones left of the 43 that were mapped and named in 1906. Then, the ice covered 7.5 square kilometres, now it is thought to cover less than one.

Dec. 1 (Bloomberg) -- Solar technologies such as photovoltaic panels, water heaters and power stations built with mirrors could provide a third of the world’s energy by 2060 if politicians commit to limiting climate change, the International Energy Agency said.

Energy from the sun could play a key role in de-carbonizing the global economy alongside improvements in efficiency and imposing costs on greenhouse-gas emitters, the agency said in a report today.