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mage via the International Energy Agency's Energy Efficiency 2021 report

A new International Energy Agency report shows rising investment in energy efficiency and gains in the efficiency of the global economy, but both lag levels needed for a sustainable climate path.

Why it matters: Boosting efficiency is vital to meeting climate goals.

By the numbers: Global energy intensity — that is, energy used per unit of economic output — improved by 1.9% this year.

  • That's above the 0.5% improvement in 2020, but well under the 4% annual level this decade in IEA's scenario for net-zero emissions by 2050.
  • Global investment rose somewhat, but in IEA's climate-friendly scenario, it would need to triple by 2030.

Go deeper: Bill Gates' TerraPower to build $4B nuclear power plant in Wyoming

Go deeper

Exclusive: Bill Gates-backed venture fund targets decarbonizing aluminum

Expand chart
Data: IEA; Chart: Will Chase/Axios

The need to decarbonize heavy industries such as steel, aluminum and cement manufacturing is taking on new urgency as policymakers and financiers search for ways to speed up the transition to a low carbon future.

Driving the news: On the aluminum front, Sortera Alloys, a company that seeks to achieve 100% reuse of aluminum waste from end-of-life products, announced $10 million in funding from Bill Gates-affiliated Breakthrough Energy Ventures on Tuesday.

D.C. is getting warmer

Photo: Mladen Antonov/AFP via Getty Images

Every season in D.C. is getting warmer, as is the case with average temperatures worldwide.

Updated 18 mins ago - Politics & Policy

What abortion access would look like if Roe v. Wade is overturned

Expand chart
Data: Axios Research; Cartogram: Sara Wise and Oriana Gonzalez/Axios

Abortion would immediately become illegal in at least 12 states if the Supreme Court were to overturn Roe v. Wade, and more would likely follow suit quickly.

Why it matters: The Mississippi case before the Supreme Court Wednesday could throw Roe's survival into question, or at least narrow its scope.