Atmospheric Concentration of Co2 Tops 400 ppm for Longest Period on Record | House Panel Votes to Slash Funding for Climate Science

Atmospheric Concentration of Co2 Tops 400 ppm for Longest Period on Record

The global level of carbon dioxide in the atmosphere has topped 400 parts per million for the longest time in recorded history. The National Oceanic and Atmospheric Administration says the grim milestone was reached on average for the entire month of March. The 400 parts per million threshold has been an important marker in U.N. climate change negotiations, widely recognized as a dangerous level that could drastically worsen human-caused global warming. The environmentalist group 350.org takes it name after the 350 parts per million threshold that scientists say is the maximum atmospheric concentration of carbon dioxide for a safe planet.

See:

House Panel Votes to Slash Funding for Climate Science

The news comes as the Republican-controlled House Science Committee has voted to cut over $320 million in funding for the study of climate change. The money would come out of the budget for NASA’s earth science research.

Global Climate Change
Environment Ethics
Environment Justice

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