A banner depicting Iran's new Supreme Leader Ayatollah Mojtaba Khamenei is displayed on the side of a highway in Tehran on March 10, 2026. Oil shocks from the Iran conflict have a historical precedent ...
Hydropower was long the country’s leading source of renewable energy, but it was passed in 2019 by wind and in 2025 by utility-scale solar. It’s still significant, though, with 5.6 percent of U.S.
Successful group work in middle and high school requires thoughtful design. These strategies help teachers structure collaboration so every student contributes—and learns.
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