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Why Were 2023 and 2024 So Hot?

Union of Concerned Scientists

The year 2023 was by far the warmest in Earths recorded history, and perhaps in the past 100,000 years , shattering the previous record set in 2016 by 0.27C (0.49F). According to recent data from NOAAs National Center for Environmental Information, 2024 is likely to be even warmer than 2023. But why were 2023 and 2024 so warm?

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2024 Year in Review: Clean Energy Progress Steeped in Solar and Storage

Union of Concerned Scientists

Solar US solar looks set to come very close to almost match, or even surpass, the record it set in 2023 for new installations. That surge was led by large-scale solar, which data/analytics firm Wood Mackenzie projects will have grown even more in 2024 than in 2023, which itself was already a huge increase over the prior years total.

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Maine Commits to 100% Clean Electricity by 2040 

Union of Concerned Scientists

The bill ( LD 1868 ), passed by the Maine Legislature on June 13, will reduce the state’s reliance on imported fossil fuels by requiring all of Maine’s power to come from renewable energy and other carbon-free electricity sources by 2040. She signed the bill into law on June 20, 2025.

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Will UN Climate Talks in Azerbaijan Deliver on Finance and Emission Reductions? 

Union of Concerned Scientists

UCS is advocating for the US to commit to cutting its emissions at least 70% below 2005 levels by 2035, a level that can be met if we implement additional strong policies (beyond the Inflation Reduction Act and other existing federal and state policies) to accelerate the deployment of renewable energy and the phase out of fossil fuels.

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Powering the Future: Why Michigan’s Data Center Debate is Critical for Clean Energy and Your Wallet

Union of Concerned Scientists

A recent report from the Lawrence Berkeley National Laboratory found that data centers used about 4% of total US electricity consumption in 2023, and that total is expected to grow as high as 12% within the next three years. Amazon is currently building a data center in Indiana that will use as much energy as half the residents in the state.

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Renewable energy investments reached a record high in 2024

A Greener Life

In Energy Transition Investment Trends 2025, the energy analysts found that in 2024, clean energy investments reached a record high of $2.1tn and were responsible for the sector’s growth by 11%. The electrification of transport, renewable energy and power grids were the most popular investments.

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STATEMENT: Wealthy countries fail to deliver on climate finance at COP29 

Enviromental Defense

In 2023 at COP28 , countries agreed to “transition away from fossil fuels” and scale up renewable energy and energy efficiency. Background information: Vulnerable regions say that a $1.3-trillion This was an important milestone recognizing that oil, gas, and coal are the biggest cause of climate change.