APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Methane Earth
Explanation: Can you help in reducing this blanket of methane gas that is warming up our Earth ? Recent evidence holds that methane (CH 4 ) is second only to carbon dioxide (CO 2 ) in creating a warming greenhouse effect but is easier to control. Atmospheric methane has doubled over the past 200 years, and its smothering potency is over 20 times that of CO 2 . Methane may even be responsible for a sudden warming of the Earth by seven degrees Celsius about 55 million years ago. As most methane is produced biologically, the gas is sometimes associated with bathroom humor . The largest abundance released by the US, however, is created when anaerobic bacteria break down carbon-based garbage in landfills . Therefore, a more effective way to help our planet than trying to restrict your own methane emissions would be to encourage efficient landfill gas management .
| Date | February 12, 2002 |
|---|---|
| Credit | Credit: GISS , NASA |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |



