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Why Were 2023 and 2024 So Hot?

Union of Concerned Scientists

Scientists are sounding the alarm because this warming is shockingly bigbigger than what we would have expected given the long-term warming trend from fossil fuel-caused climate change. According to recent data from NOAAs National Center for Environmental Information, 2024 is likely to be even warmer than 2023.

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Ask a Scientist: How Close Are We to a Clean Energy Transition?

Union of Concerned Scientists

After the hottest summer on record, the world continues to witness extreme weather fueled by the burning of fossil fuels. We need to stop burning fossil fuels immediately. Thankfully, we are in the midst of a much-needed transition away from fossil fuels and towards a future powered by more renewables.

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​​The Science Behind Sea Level Rise: How Past Emissions Will Shape Our Future

Union of Concerned Scientists

The future trajectories are based on different scenarios, such as versions of the future where the world comes together to take action and phase out fossil fuels, or versions where fossil fuel production continues throughout this century. What causes sea level rise to persist for centuries?

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A Grim Signal: Atmospheric CO2 Soared in 2024

Inside Climate News

By Bob Berwyn The latest anomaly in the climate system that cant be fully explained by researchers is a record annual jump in the global mean concentration of carbon dioxide in the atmosphere measured in 2024.

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Addressing the Triple Planetary Crisis at Our Ocean 2025

Ocean Conservancy

As we prepare to participate in the 10 th Our Ocean Conference in Busan, Republic of Korea, from April 28-30, I like to think about this beautiful poem in a different way. Just like in the poem, the ocean remains largely undiscovered, unknown. Warmer ocean waters impact marine ecosystems, including coral reefs and fisheries.

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How Major Carbon Producers Drive Sea Level Rise and Climate Injustice

Union of Concerned Scientists

In a new study released today, UCS attributes substantial temperature and sea level rise to emissions traced to the largest fossil fuel producers and cement manufacturers. Every delay in phasing out fossil fuels will burden future generations who need to adapt to rising seas and recover from loss and damage due to sea level impacts.

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What Is a Climate Model and How Does It Work?

Union of Concerned Scientists

Climate models are the main tool climate scientists use to predict how Earth will respond to more heat-trapping pollutants in the atmosphere. Just by looking at the name, you can see that a GCM is a model that simulates the circulation of Earths different physical systems like the atmosphere and ocean. What causes a circulation?