Word: co2
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Dates: during 2000-2009
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...study just published in Science, there may not be any mystery after all. By looking at the chemistry of fossilized foraminifera - tiny sea creatures no bigger than a grain of sand - a team led by Aradhna Tripati, of University of the California, Los Angeles, has detected a significant CO2 bump during both warming episodes...
Some of the best evidence linking rising carbon dioxide levels to a warmer world comes from the coldest places on earth. Samples of ancient air extracted from deep inside the Antarctic and Greenland ice caps make it clear that CO2 is scarce in the atmosphere during ice ages and relatively abundant during warmer interglacial periods - like...
...relationship between CO2 and climate is clear going back about 800,000 years. Before that, however, it gets murkier. That's largely because ice and air that old haven't yet been found. So scientists rely instead on indirect measurements - and these have led to a climate mystery: some episodes of past warming, including a planetary heat wave about 15 million years ago and another about 3.5 million years ago, seem to have happened without a rise in CO2. No one quite understands why. Maybe other greenhouse gases were the cause - methane, for example. Or maybe...
...group of eco-conscious students and tutors to encourage Lowell residents and other students to promote environmental sustainability by eating little to no meat in the d-hall on Mondays. According to information provided by the HoCo on a whiteboard outside Lowell dining hall, students can help reduce CO2 emissions by one to two tons for each day of meatless eating...
...group of eco-conscious students and tutors to encourage Lowell residents and other students to promote environmental sustainability by eating little to no meat in the d-hall on Mondays. According to information provided by the HoCo on a whiteboard outside Lowell dining hall, students can help reduce CO2 emissions by one to two tons for each day of meatless eating...