The extraordinary research effort, from the discovery of the virus’s structure to the start of inoculations this week

In the U.S., health workers come first. But for other groups, scientists and policy makers are weighing a mix of disease risks, logistics and ethics

Tips on how to read the full results from BNT-Pfizer and Moderna, from an expert in evaluating medical evidence.

We appreciate the urgency of getting these newly developed coronavirus vaccines out to millions of Americans and potentially billions of people around the world.

We also know all too well the tragic story of a rushed polio vaccine.

Gawande discusses when a vaccine might be ready for distribution, who should receive it, and whether eradicating the virus is possible.

Archaeology magazine reveals the year’s most exciting finds.

Studies could lead to new ways to enhance memory for those with traumatic brain injury or Alzheimer's disease,

Unpublished notes show he believed ancient structures held key to the apocalypse.

Thousands of years ago, people were performing a form of surgery called "trepanation" that involves boring holes through a person's skull.

Although dozens, and perhaps hundreds, of explanations have been offered to account for the dodecahedrons, no one is certain just what they were used for.

On Dec. 21, Jupiter and Saturn will appear to be no more than a dime’s width apart in the night sky. The last time that could be seen was in 1226.

The result highlights a fundamental tension: Either the rules of quantum mechanics don’t always apply, or at least one basic assumption about reality must be wrong.

As Carl Sagan said, “Extraordinary claims require extraordinary evidence.”

Researchers can now explore the best-yet map of the Milky Way, with detailed information on the positions, distances and motion of 1.8 billion cosmic objects, to help us better understand our place in the universe.

Instrument platform crashed into the telescope’s dish, irrevocably ending the facility’s role in astronomy.

Photons explore quantum maze faster than possible for any classical computer.

Now, researchers have developed a design theory to control how accurately nanobots assemble in the absence of a mold or template.

The 15-year-old scientist has used technology to address contaminated drinking water, opioid addiction and cyber-bullying.

Easy one-step technique could speed up commercialization of perovskite solar cells, which promise to be cheaper and more efficient than silicon.

The rapid, one-step mobile test could help combat the pandemic and fully reopen communities.

The sweet spot for physical activity and longevity seemed to arrive at about 35 minutes a day of brisk walking or other moderate activities.

And stop calling them soot!

For many years, the long-term success rates for those who attempt to lose excess body weight have hovered around 5 to 10 percent.

The report links widespread, human-caused ocean pollution to seafood contamination, dangerous infections and threats to the planet's oxygen supply.

A Danish study found that people with elevated levels of a compound called PFBA were more than twice as likely to have a severe form of Covid-19.

Countries have settled on 8,848.86m – higher than either nation's previous measurements.

The Google company DeepMind says its artificial intelligence system AlphaFold can predict the structure of proteins. A protein's structure determines how well it functions. Here's why that's important for your health.

A geologic game of connect the dots reveals hints of a giant undersea crater.

A new study investigates why roots go where they go.

Orca report covering a decade of necropsies identifies threats.

The agreement, negotiated via the nuance-free tool of video conferencing, also offered hope of a renewed era of global accord on climate, where issues grounded in science might finally trump political posturing.

Corporate pork and dairy producers are producing “biogas” to reduce methane emissions. But the actual climate benefits are unclear, and often overstated.

The organization calls particulate matter ‘An ignored environmental policy challenge.’

The Gulf of Mexico is littered with tens of thousands of abandoned oil and gas wells, and toothless regulation leaves climate warming gas emissions unchecked.

Spanning the past 50 years, the paper shows a disconnect between the overwhelming declines in nature’s potential to support human well-being and how people are affected.

Domestic emissions reductions aren’t enough—the US needs to help speed the climate transition in poor countries

“There is no reason to think that in 30 years much of anything will be as it is today,” one of the editors of a new report on the Arctic climate said.

Here's why moving now to combat climate change is cheaper and better for the economy than postponing action.

A green coronavirus-induced recovery could help close the emissions gap, but it is not enough for world leaders to meet their goal of limiting warming to well below 2C.

Impact of global warming grows despite the presence of a cooling influence in the tropical Pacific.