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‘Caving to a Mob,’ ‘Inevitable’: Harvard Faculty Express Disappointment, Relief As Gay Steps Down | News | The Harvard Crimson
<p>Harvard researchers estimated that before humans started pumping mercury into the atmosphere, it contained on average about 580 megagrams of mercury. However, in 2015, independent research that looked at all available atmospheric measurements estimated the atmospheric mercury reservoir was about 4,000 Mg — nearly 7 times larger than the natural condition estimated in this study.</p> <p> </p>
Methane is 86 times more effective at trapping heat over a 20-year-period than carbon dioxide
A published study has found that pollution from methane in the US was 70% higher than official estimates between 2010-2019.
Radical ozone chemistry Ozone molecule illustration. Molekuul/ Science Library / Getty Images. Last year’s lockdowns resulted in a drop in air pollution around the globe. But while other pollutants decreased, Beijing and northern China recorded a significant increase in ground-level ozone. A paper published in the Proceedings of the National Academy of Sciences explains ozone chemistry and why this may have happened. Ozone (O 3) occurs naturally in the upper atmosphere, but artificial amounts at ground level have been increasing. Unlike O 2, it’s highly reactive and can have harmful hea...