Reducing particle pollution can save thousands of lives, but states need more data to inform better controls. An atmospheric scientist explains what data and actions are needed.

Russia isn’t likely to put nuclear missiles in space, but their reported anti-satellite weapon is just as alarming. An expert on nuclear strategy explains.

Hard rock minerals like gold, silver, copper and lithium on public lands belong to the American public, but under a 150-year-old law, the US gives them away for free.

Most people don’t know what these labels really mean − and advertisers take advantage of that fact.

On Feb. 7, 2024, the EPA strengthened the federal limit for annual levels of fine particulate air pollution, or PM2.5. Many serious health effects have been linked to PM2.5 exposure.

The US, a minor liquefied natural gas supplier a decade ago, now is the world’s top source. That’s good for energy security, but bad for Earth’s climate. An energy scholar explains the trade-offs.

Although most Americans believe dietary supplements are safe, these products often make health claims that are unproven or downright false.

Although most Americans believe dietary supplements are safe, these products often make health claims that are unproven or downright false.

Tianeptine is dangerous as an active ingredient, but the products containing it have no quality control and could be contaminated with metals, microorganisms or other undisclosed drugs.

President Biden has called for protecting large, old trees from logging, but many of them could be cut while the regulatory process grinds forward.