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Two years ago, more than 11,000 scientists from 153 countries declared a climate emergency. They did so in a report that said scientists have "a moral obligation to clearly warn humanity of any catastrophic threat and to 'tell it like it is.'"
Now, they say things look even worse.
On Wednesday,
BioScience, and included an additional 2,800 scientists' signatures.
The study evaluated 31 variables, like ocean changes and energy use. It found that over half are at new all-time record lows or highs.
For example, in April 2021, carbon dioxide concentration reached 416 parts per million—the highest monthly global average concentration ever recorded. Glaciers are losing 31% more snow and ice per year than they did just 15 years ago, a rate that is much faster than previously believed.