Over 50 years since Earth Day was first celebrated on April 22, 1970, awareness of climate change has grown, yet the planet continues to warm alarmingly. Carbon dioxide levels have surged by over 30%, with a record increase noted by the NOAA. All U.S. states and 240 cities have warmed since 1970, with Alaska experiencing the highest rise. The Arctic heats faster than average, contributing to sea-level rise due to melting ice. Despite efforts, human-induced climate change poses a critical challenge going forward.
Since the first Earth Day, the annual average concentration of carbon dioxide in the atmosphere has increased by more than 30%. It is now rising at the fastest rate on record.
All 50 states and 240 cities across the U.S. have experienced warming since the first Earth Day, according to an analysis by Climate Central, a nonprofit climate research group.
The Arctic region is heating much faster than the global average, which has pushed Alaska to the top of the list, with its average annual temperature rising by 4.3 degrees Fahrenheit since 1970.
Warming global temperatures are also driving sea-level rise, which has been accelerating in recent decades due to melting glaciers and ice sheets.
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