Ice that breaks away from a glacier's fracture zone falls into the ocean in Greenland. (Photo by Jason Edwards/Getty Images)
Record greenhouse gas emissions could exhaust the planet's carbon budget in just three years, pushing it past the critical warming threshold of 1.5 degrees Celsius (2.6 degrees Fahrenheit).
Global warming of 2 degrees Celsius (3.6 degrees Fahrenheit) is considered a significant threshold—exceeding this value significantly increases the likelihood of catastrophic and irreversible climate change, including extreme heat waves, droughts, and melting of the Greenland and West Antarctic ice caps.
Under the 2015 Paris Agreement, nearly 200 countries committed to limiting global temperature rise to 1.5°C and, ideally, to a safe level below 2°C.
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