RSS feed source: US Energy Information Administration

In-brief analysis

October 31, 2025

According to data released by the U.S. Census Bureau in September, the United States exported 46.8 million short tons (MMst) of coal in the first half of 2025 (1H25), an 11% decline from 1H24. Steam coal exports totaled 22.5 MMst, a 10% decline from 1H24. Metallurgical coal exports totaled 24.2 MMst, a 13% decline from 1H24. Reduced coal exports to China (4.4 MMst) accounted for 73% of the decline in total U.S. net coal exports. China accounted for 76% of the decline in metallurgical coal exports and 68% of the decline in steam coal exports. U.S. exports to China decreased after China imposed a 15% additional tariff on imports of U.S. coal in February and a 34% reciprocal tariff on imports from the United States in April. The reduction in

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RSS feed source: US Energy Information Administration

Penn State scientists have devised a new method to predict superconducting materials that could work at higher temperatures. Their model bridges classical superconductivity theory with quantum mechanics through zentropy theory. This breakthrough could guide the discovery of powerful, resistance-free materials for real-world use and transform energy technology.

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Researchers have made germanium superconducting for the first time, a feat that could transform computing and quantum technologies. Using molecular beam epitaxy to embed gallium atoms precisely, the team stabilized the crystal structure to carry current without resistance. The discovery paves the way for scalable, energy-efficient quantum devices and cryogenic electronics.

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