Science

Pfizer and BioNTech tested a two-dose regimen of 10 micrograms — about a third the dosage used for teens and adults — administered three weeks apart.

“We’re fighting against what feels like a ticking time bomb,” said Natalie Sweet, an 18-year-old climate activist. Here’s how she finds courage and resilience.

California firefighters are wrapping the bases of several sequoias, including the world’s largest tree, in fireproof aluminum blankets as a blaze approaches.

The House Oversight Committee is probing Exxon, BP, Chevron, Shell and lobbying groups over climate disinformation.

Hundreds of birds migrating through New York City this week died after crashing into the city’s glass towers, a mass casualty event spotlighted by an NYC Audubon volunteer’s tweets showing the World Trade Center littered with bird carcasses. This week’s avian death toll was particularly high, but bird strikes on Manhattan skyscrapers are a persistent problem that NYC Audubon has documented...

When deciding how you feel about boosters, here’s a fundamental thing you can’t forget that sometimes gets lost in the conversation.

SpaceX is set to make history once again, as Elon Musk’s space company prepares to launch a four-member nonprofessional crew to orbit.

A global study has found young people are suffering “profound psychological distress” due to climate change and government inaction on the crisis. 

Inbound flights of Afghan refugees to the United States will remain suspended for at least a week, a White House spokeswoman said Monday.

Tech entrepreneur Ben Lamm is helping fund a project by Harvard geneticist George Church to revive the woolly mammoth by genetically engineering Asian elephants.

An expert review of data concludes Covid vaccine boosters are not needed at this time for the general public, a group of U.S. and international scientists said.

Workplace disputes are emerging between those who are vaccinated against Covid and those who are not.

There are no standard guidelines for achieving net zero or carbon neutral emissions. That means companies and countries can create their own definitions.

Many of the Republican candidates on the ballot to replace Newsom want to roll back the state’s plans to address climate change and transition to clean energy.

Nearly 60% of the 104,223 enrollees in the World Trade Center Health Program contracted at least one illness caused by 9/11 as of 2020, a CDC report says.

A large CDC study found that unvaccinated people are 11 times more likely than vaccinated people to die from Covid, Director Dr. Rochelle Walensky said Friday.

The lawsuit argues the State Water Resources Control Board doesn’t have legal authority to require water rights holders to stop diverting water.

So many of us find it hard to make good decisions, like saving more for retirement, exercising daily and eating healthy. But a Stanford-trained psychologist may have developed a simple exercise that will give you the motivation and confidence to focus on long-term success.

The number of Covid cases being recorded daily in the West remains high, and even resembles earlier peaks at different points during the pandemic.

Climate change has been hard for most of us to see and feel. That’s beginning to change, and more people than ever before are committed to finding solutions.