News tagged with earth atmosphere

NOAA greenhouse gas index continues to climb

NOAA's updated Annual Greenhouse Gas Index (AGGI), which measures the direct climate influence of many greenhouse gases such as carbon dioxide and methane, shows a continued steady upward trend that began with the Industrial ...

Nov 09, 2011 4.5 / 5 (6) 3

Watching the dragon spit fire

(PhysOrg.com) -- This video catches the moment when a Draconid meteor exploded in Earth's atmosphere earlier this month. The dramatic footage comes from a campaign to observe this important meteor shower using aircraft to ...

Oct 26, 2011 4 / 5 (1) 0

Snowball Earth hypothesis challenged

The hypothesis that the Earth was completely covered in ice 635 million years ago has received a serious blow. The atmospheric concentration of CO2 during that period was much lower than previously thought, ...

Oct 12, 2011 5 / 5 (4) 3

Study finds unprecedented Arctic ozone loss

(PhysOrg.com) -- A NASA-led study has documented an unprecedented depletion of Earth's protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low ...

Oct 02, 2011 3.8 / 5 (18) 28 | with audio podcast