emissions

How cleaning up shipping cut pollution—and warmed the planet

Posted in Science on 23rd Jul, 2024
by Alex Muller

IMO 2020 aimed to reduce sulfur in shipping fuels from 3.5% to 0.5% to improve air quality and public health. The regulation has indeed lowered sulfur dioxide and ammonia levels near ports, but it has also led to increased warming.
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Ozone-Depleting Compound Persists, NASA Research Shows

Posted in Science on 21st Aug, 2014
by Alex Muller

Earth's atmosphere contains an unexpectedly large amount of an ozone-depleting compound from an unknown source decades after the compound was banned worldwide.
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