Why Experts Are Urging Swifter Treatment for Children With Obesity

When did pediatric obesity become such a problem? For scientists, the alarms went off in the 1980s and 1990s. Before then, experts took comfort in data from the 1960s indicating…

Deaths Among Pregnant Women and New Mothers Rose Sharply During Pandemic

Pregnant women and new mothers died in sharply increasing numbers during the pandemic, and not just because of a rise in medical complications that may accompany pregnancy and childbirth. An…

As the Colorado River Shrinks, Washington Prepares to Spread the Pain

WASHINGTON — The seven states that rely on water from the shrinking Colorado River are unlikely to agree to voluntarily make deep reductions in their water use, negotiators say, which…

Newly Discovered Asteroid Passes Close to Earth

A small asteroid flew very close to Earth on Thursday night, less than a week after astronomers discovered the object. The asteroid, named 2023 BU, was scheduled to pass over…

Biden Administration Bans Mining in Boundary Waters Wilderness

WASHINGTON — The Biden administration on Thursday said it will establish a 20-year moratorium on mining upstream from Minnesota’s Boundary Waters Canoe Area Wilderness, a vast preserve of lakes and…

Ukraine’s Scientists Receive a Funding Lifeline From Abroad

Larissa S. Brizhik didn’t have to stay. Like many Ukrainian women and children, she could have fled the war zone. But as a department head at the Bogolyubov Institute for…

Where is Physics Headed (and How Soon Do We Get There)?

The future belongs to those who prepare for it, as scientists who petition federal agencies like NASA and the Department of Energy for research funds know all too well. The…

F.D.A. Proposes Limits for Lead in Baby Food

The Food and Drug Administration on Tuesday proposed maximum limits for the amount of lead in baby foods like mashed fruits and vegetables and dry cereals, after years of studies…

The Sierra Club Tries to Move Past John Muir, George Floyd and #MeToo

For three years, the nation’s most prominent environmental organization has been ruminating about its past and future. Like many other American institutions, the Sierra Club was convulsed by the 2020…

Depleted Under Trump, a ‘Traumatized’ E.P.A. Struggles With Its Mission

WASHINGTON — The nation’s top environmental agency is still reeling from the exodus of more than 1,200 scientists and policy experts during the Trump administration. The chemicals chief said her…