Global carbon dioxide in atmosphere touches milestone level

Last Updated: Saturday, May 11, 2013, 10:21

For the first time in human history, the carbon dioxide (CO2) concentration in the atmosphere has passed the milestone level of 400 parts per million (ppm).

Arctic was warmer 3.5 million years ago

Last Updated: Friday, May 10, 2013, 13:26

The Arctic was very warm during a period roughly 3.5 to 2 million years ago, a new study suggests.

Scientists warn over Arctic Ocean’s rapid acidification

Last Updated: Monday, May 6, 2013, 21:38

Scientists from the Arctic Monitoring and Assessment Programme (AMAP) on Monday warned over the rapid acidification of the Arctic Ocean caused by carbon dioxide emissions.

Climate chief warns of `urgency` as CO2 levels rise

Last Updated: Monday, April 29, 2013, 22:41

The UN`s climate chief called for urgency today as she opened a new round of global talks amid warnings that Earth-warming carbon dioxide levels were approaching a symbolic threshold never seen in human history.

New technique discovered to make fuel from CO2 in air

Last Updated: Wednesday, March 27, 2013, 16:59

Researchers have found a way to transform the carbon dioxide (CO2) trapped in the atmosphere into useful industrial products.

Increased acidity strangling shallow reefs

Last Updated: Thursday, February 28, 2013, 18:13

Increasing acidity in oceans, caused by heightened levels of atmospheric carbon dioxide (CO2), may be strangling shallow coral reefs, says a new study.

Higher CO2 levels may help wheat

Last Updated: Tuesday, February 26, 2013, 16:58

High carbon dioxide levels caused by climate change might actually help wheat survive in drought like conditions, says an Australian research.

New tech needed for curbing CO2 at source

Last Updated: Sunday, February 17, 2013, 14:02

Reducing carbon dioxide emissions alone may not be enough to curb global warming. There is a need to develop technologies that remove large amounts of the gas at the source, say researchers.

Warmer soils release additional CO2 into atmosphere

Last Updated: Monday, January 21, 2013, 11:17

In a new study, researchers have found that warmer temperatures due to climate change could cause soils to release additional carbon into the atmosphere, thereby enhancing climate change.

Internet emits 830 million tonnes of carbon dioxide

Last Updated: Sunday, January 6, 2013, 20:11

Internet and other components of information communication and technology (ICT) industry annually produces more than 830 million tonnes of carbon dioxide (CO2), the main greenhouse gas, and is expected to double by 2020, a new study has found.

Marine animals dissolving in Southern Ocean acid

Last Updated: Monday, November 26, 2012, 20:46

Researchers have revealed that the shells of sea snails are dissolving in a small patch of the Southern Ocean.

`Climate change may super-size sweet potatoes`

Last Updated: Sunday, November 25, 2012, 15:38

Rising levels of carbon dioxide in the atmosphere may double the size of the hardy sweet potato - which is increasingly becoming a staple food in Asia and Africa, researchers say.