Stories by Jackie Flynn Mogensen

“This is probably going to be the superlative El Niño event of our lives so far,” a climate scientist says

Advocates and scientists warn that giving political appointees power over research grants would “upend” U.S. science

A quarter of a century after the Twin Towers fell, those who lived through the attacks are still seeking care for myriad illnesses, including cancers, post-traumatic stress disorder, and more

The Pacific Ocean has seen an especially active hurricane season so far, while the Atlantic has had barely a whimper of a storm. Experts explain why

Experts say there is not enough evidence to support broadly screening men for testosterone without any symptoms

The findings, which were made in mice, may offer a new way to prevent a common chemotherapy side effect that can last well beyond treatment

The world is set to blow past the Paris Agreement’s longtime threshold “within the next few years,” according to a new report

After one of the worst natural disasters in the region’s history, attention is turning to the looming super El Niño

Avalanches like the one that devastated parts of Nepal and Tibet are becoming more common thanks to climate change. Here’s where else is at risk

In a near-total lunar eclipse, the moon turned red-orange for viewers in North America, Europe and Africa

In a clinical trial, people with obesity saw clear health benefits on the keto diet that they didn’t see on two other popular eating regimens

A pair of new studies point to the role of early menopause and hormone treatment in cognitive decline, but more research is needed, experts say

A request for information from the Department of Health and Human Services seeks public input as to how vaccines are categorized

This near-total eclipse will be visible from the Americas, Africa and Europe—here’s how to see it

The world’s oceans hit 21.10 degrees Celsius last Saturday, breaking a record set in 2024

Even as cases of diseases such as measles rise, childhood vaccinations are declining, thanks to changes in public health policies and antivaccine sentiment, experts say

The area of Europe affected by wildfires is due to triple, a new study finds

Testosterone is a longtime favorite of the bodybuilding crowd, but now the hormone is being touted for perimenopause, “looks maxxing,” and more

The 2001 Roadless Area Conservation Rule protects the nation’s forests from logging and other industry activities

The unicorn of the sea’s spiral tooth has long been a scientific enigma

El Niño years typically mean warmer ocean temperatures and less wind shear in some parts of the Pacific—and that means more potential for hurricanes

Hawaii rarely sees direct hurricane hits—if Lala strengthens, it will be just the third recorded hurricane to make landfall there

This extreme rain was deadly, with at least eight people killed and many others stranded

This storm, a rarity for this part of the Pacific, is expected to bring heavy rains, strong wind and possibly “life-threatening flooding” to Hawaii this weekend