The year 2024 is predicted to be the hottest in at least 125,000 years, with a new report warning that our planet is "approaching a tipping point" and urgent action is needed to combat global warming.
The report highlights multiple signs of a climate crisis, including the melting of polar ice caps, extreme heat in the oceans causing the largest ever coral bleaching event, and the loss of forest cover due to wildfires.
With global temperatures in 2024 surpassing the peak of the last ice age, the 2015-2024 decade is the hottest on record, according to the World Meteorological Organization. By mid-2025, global surface temperatures will be 1.54 degrees Celsius higher than historical averages, marking the second-highest level in history and confirming the long-term trend of increasing global warming.
The intensity of carbon dioxide, methane, and nitrous oxide in the atmosphere is at an all-time high, with carbon dioxide levels in May 2025 reaching 430 parts per million at the Mauna Loa Observatory in Hawaii, a level unseen in millions of years.
The number of days with extreme heat surpassing historical averages has also reached an all-time high in 2024, as evidenced by the occurrence of heat waves.
Ocean temperatures have also reached record highs, leading to the largest ever coral bleaching event, affecting approximately 84% of coral reefs worldwide between January 2023 and May 2025.
The rate of forest loss due to wildfires has also reached an all-time high, with wildfires in 2023 increasing by 370% in tropical forests, resulting in the release of pollutants and the loss of biodiversity.
The Arctic and Antarctic ice caps are melting at an alarming rate, with the Arctic sea ice area in 2024 reaching one of the lowest recorded levels at 4.28 million square kilometers. Greenland and Antarctica are losing ice at a rapid pace, with Greenland losing 5,540 gigatons and Antarctica losing 2,660 gigatons, significantly reducing the world's ice reserves.
The global tipping point report from scientists at Exeter University warns that the warm water coral reef system, which is vital for fishing and coastal communities, has passed a critical tipping point and is at risk of permanent collapse.
With the continuous decline of glaciers worldwide, sea levels are rising, and data suggests that the Greenland and West Antarctic ice sheets may be approaching a tipping point, which could lead to a rise in global sea levels by several meters.
The report warns that the world is approaching a tipping point in multiple systems, including glaciers, permafrost, and tropical forests, and if these tipping points are crossed, they could trigger a feedback loop that accelerates global warming, potentially pushing the world into a "hot house" state.
Over the past 50 years, global temperatures have risen faster than at any time in the last 2,000 years. If this trend continues, the world could warm by 3.1 degrees Celsius from pre-industrial levels by 2100, according to the United Nations Environment Programme.
"The intensifying climate crisis is threatening critical operating systems of the planet, from ocean currents to global water supplies, but our report also shows that urgent action can still bring stability to the Earth system," said Rockstrom.
William Ripple, the lead author from Oregon State University, emphasized the need for swift and effective climate action: "There are ready-to-deploy strategies to mitigate climate change impacts that are cost-effective and essential, and every fraction of a degree of avoided warming is important for human well-being and the health of the biosphere."
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