What was the biggest environmental issue in the US in 2021?

The biggest environmental issue in the US in 2021 was the record-breaking heatwaves and wildfires that swept across the West Coast. According to the National Oceanic and Atmospheric Administration, the period from June to August was the hottest on record in the contiguous United States, and the extreme heat contributed to a series of devastating wildfires. These fires burned millions of acres of land, destroyed homes and businesses, and killed dozens of people.

Another major environmental issue in 2021 was the ongoing climate crisis, which continued to manifest in more frequent and severe weather events, including hurricanes, floods, and droughts. These events have had far-reaching consequences, from damaging infrastructure and agriculture to causing mass displacement of people.