On Saturday, October 24, people in 181 countries came together for the most widespread day of environmental action in the planet’s [her]story. At over 5200 events around the world, people gathered to call for strong action and bold leadership on the climate crisis. -350.org

Why 350? Scientists say that 350 parts per million CO2 in the atmosphere is the safe limit for humanity. Right now we’re at 390. And for all of human history until about 200 years ago, our atmosphere contained 275 parts per million of carbon dioxide. read more about the science here…

On Saturday afternoon I hopped on my bike and rode to the “Boston Underwater” 350 Celebration.

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