News tagged with chemical changes

Fools' gold found to regulate oxygen

As sulfur cycles through Earth's atmosphere, oceans and land, it undergoes chemical changes that are often coupled to changes in other such elements as carbon and oxygen. Although this affects the concentration of free oxygen, ...

Jul 23, 2012 5 / 5 (3) 0 | with audio podcast

PCBs levels down in Norwegian polar bears

It's never been easy to be a polar bear. They may have to go months without eating. Their preferred food, seal, requires enormous luck and patience to catch. Add to that the melting of Arctic sea ice due to climate change, ...

Mar 29, 2012 not rated yet 0

Weathering of rocks impacts climate change

Chemical weathering of rocks by carbon dioxide dissolved in rainwater has never been taken into account in models of future climate change so far. However, researchers from the Laboratoire Géosciences ...

Mar 05, 2012 4 / 5 (4) 1