News tagged with atmospheric carbon dioxide

Ancient ice melt unearthed in Antarctic mud

Global warming five million years ago may have caused parts of Antarctica's large ice sheets to melt and sea levels to rise by approximately 20 metres, scientists report today in the journal Nature Geoscience.

Jul 21, 2013
3.7 / 5 (18) 21 | with audio podcast

High CO2 spurs wetlands to absorb more carbon

(Phys.org) —Under elevated carbon dioxide levels, wetland plants can absorb up to 32 percent more carbon than they do at current levels, according to a 19-year study published in Global Change Biology from t ...

Jul 16, 2013
4.7 / 5 (12) 12 | with audio podcast

How climate-friendly is your cup of coffee?

Coffee drinkers are encouraged to buy environmentally-friendly coffee, whether it be certified, organic or shade coffee (grown under the shade of trees that are important habitat for birds), but how effective are these ways ...

Jul 03, 2013
4.7 / 5 (12) 6

Wood not so green a biofuel

Using wood for energy is considered cleaner than fossil fuels, but a Dartmouth College-led study finds that logging may release large amounts of carbon stored in deep forest soils. The results appear in the journal Global Ch ...

Jun 11, 2013
5 / 5 (1) 0

Testing artificial photosynthesis

(Phys.org) —With the daily mean concentrations of atmospheric carbon dioxide having reached 400 parts-per-million for the first time in human history, the need for carbon-neutral alternatives to fossil ...

Jun 10, 2013
2.5 / 5 (6) 0 | with audio podcast

Alpine lakes reflect climate change

Increases in temperature as a result of climate change are mirrored in lake waters where temperatures are also on the rise. A new study, by Dr. Martin Dokulil, retired researcher from the Institute for Limnology at the University ...

Jun 06, 2013
3.8 / 5 (8) 13