The launch of NASA's Artemis II mission, the first flight of astronauts to the Moon in more than 53 years, will have to wait another month after a fueling test Monday uncovered hydrogen leaks in the connection between the rocket and its launch platform at Kennedy Space Center in Florida.

"Engineers pushed through several challenges during the two-day test and met many ...

The Trump administration is no fan of renewable energy, but it reserves special ire for wind power. Trump himself has repeatedly made false statements about the cost of wind power, its use around the world, and its ...

The Environmental Protection Agency (EPA) cracked down on lead-based products—including lead paint and leaded gasoline—in the 1970s because of its toxic effects on human health. Scientists at the University of Utah have analyzed human hair samples spanning nearly 100 years and found a 100-fold decrease in lead concentrations, concluding that this regulatory action was highly ...

On Friday, a judge ruled that the Trump administration violated the law in forming its Climate Working Group, which released a report that was intended to undercut the rationale behind greenhouse gas regulations. The judge overseeing the case determined that the government tried to treat the Climate Working Group as a formal advisory body, while not having it obey many of the...

For most of their evolutionary history, narwhals have relied more on sound than sight to survive in the Arctic’s dark icy waters.

The speckled toothed whales—sometimes referred to as “unicorns of the sea” for the long, spiral tusks that protrude from the heads of males—navigate, hunt, and communicate using echolocation. By emitting a series of calls, whistles, and high...