The oceans are the most important factor for absorbing CO2. In the fight against climate change it is therefore essential to understand the mechanisms involved. Corals provide information about past pH values in the seas and thus natural and man-made variations in carbon dioxide levels. read...
When the comet is close enough to the sun the ice on its surface ‘sublimes’ — transforms from solid to gas — forming a gas atmosphere called a coma. Analysis of the coma by instruments on Rosetta revealed that it contained not only water, carbon monoxide and carbon dioxide, as anticipated, but also molecular oxygen. But where did the oxygen come from? read...
