It’s impossible to conceptualize how much money Bezos has

Genetic analysis of bones discovered in a Siberian cave hints that the prehistoric world may have been filled with “hybrid” humans.

The bone, found in a cave, is the oldest modern human fossil ever discovered in Europe. It hints that humans began leaving Africa far earlier than once thought.

In some ways, the planet's worst mass extinction — 250 million years ago, at the end of the Permian Period — may parallel climate change today.

From denialism to death threats, Dr. Anthony S. Fauci describes a fraught year as an adviser to President Donald J. Trump on the Covid-19 pandemic.

The island is running out of drinking water and prescription drugs, but leaders are confident Puerto Ricans will endure.

Travelers seeded multiple cases starting as early as mid-February, genomes show.

In Fall 2020, all MIT students and the general public are welcome to join Professors Richard Young and Facundo Batista as they discuss the science of the pandemic during this new class.

A Harvard professor for 46 years, he was an expert on insects and explored how natural selection and other forces could influence animal behavior. He then applied his research to humans.

From denialism to death threats, Dr. Anthony S. Fauci describes a fraught year as an adviser to President Donald J. Trump on the Covid-19 pandemic.

President Trump has nominated Rep. Jim Bridenstine (R-OK) to be NASA administrator. The former Navy aviator and three-term congressman has recently promoted an ambitious vision for space policy...

From denialism to death threats, Dr. Anthony S. Fauci describes a fraught year as an adviser to President Donald J. Trump on the Covid-19 pandemic.

Archaeologists in Luzon Island have turned up the bones of a distantly related species, Homo luzonensis, further expanding the human family tree.

In an attempt to alleviate some of the staffing concerns, Burgum announced that the state health officer has amended an order that will allow health care workers with asymptomatic cases of COVID-19...

In a milestone for synthetic biology, colonies of E. coli thrive with DNA constructed from scratch by humans, not nature.

As a threat to wildlife, an amphibian fungus has become “the most deadly pathogen known to science.”

In Boston and in the Netherlands, scientists are racing to build a vaccine against the virus strangling the world.

Students will learn the age of the Earth, too.

Electroactive bacteria were running current through “wires” long before humans learned the trick.

Intensive care beds are full of unvaccinated coronavirus patients at a hospital in Boise, Idaho. Doctors now are bracing to have to conserve scarce resources for those most likely to survive.

Scientists don’t know yet whether the mutation makes the variants more contagious, but they are concerned that it might.

It will harm the reputation of the beleaguered president further

Travelers seeded multiple cases starting as early as mid-February, genomes show.

The stretch of six genes seems to increase the risk of severe illness from the coronavirus.

Forty people in Milwaukee County may have become infected with the coronavirus as a result of participating in Wisconsin elections on April 7.>>No Spike,…

A new study bolsters the prediction by the Centers for Disease Control and Prevention that the so-called B.1.1.7 variant will dominate Covid-19 cases by March.

Prices for an additive used to clean fish tanks have skyrocketed after studies found the pharmaceutical drug version of it may treat the coronavirus, a report said. Chloroquine phosphate is used to...

Scientists are finding new ways to probe two not-so-rare conditions to better understand the links between vision, perception and memory.

If the Massachusetts senator is now a person of color then the term has no meaning.

The stretch of six genes seems to increase the risk of severe illness from the coronavirus.

NASA scientists compared the astronaut to his earthbound twin, Mark. The results hint at what humans will have to endure on long journeys through space.

The international standard measurement of the kilogram is being officially changed on May 20, for the first time making all standard units defined in terms of basic physical principles instead of...

"This event is completely unprecedented and upended our expectations about the Antarctic climate system," one expert said.

The myxoma virus, fatal to millions of Australian rabbits, is a textbook example of the unexpected twists in the evolution of viruses and their hosts.

Sonar readings from New York's Hudson River hint at a revival for the embattled Atlantic sturgeon.

The number of birds in the United States and Canada has declined by 3 billion, or 29 percent, over the past half-century, scientists find.

"It's been a success," said County Executive Mark Poloncarz. "We figured it would be pretty good, but now we're seeing the results."

The company’s large U.S. trial found an efficacy rate of about 90 percent. But at this point, the nation is awash in other shots.

The vaccine’s efficacy rate dropped from 72 percent in the United States to just 57 percent in South Africa, where a highly contagious variant is driving most cases.

In a nub of issue from the 1960s, scientists have found more clues of HIV’s emergence in humans.

Most Covid-19 infections are spread by people who have no symptoms, the CDC says in newly updated guidance.

Cornell University researchers analyzing 38 million English-language articles about the pandemic found that President Trump was the largest driver of the “infodemic.”

Two dozen of the medicines are already under investigation. Also on the list: chloroquine, a drug used to treat malaria.

A new genetic study suggests that Polynesians made an epic voyage to South America 800 years ago.

As the cost of insulin skyrockets, some desperate diabetics are taking to rationing — and risking their lives.

A study published last fall went unheeded. One of its authors now says economic shutdowns to fight the coronavirus could last up to eight months.

"You see what's going on in New Zealand?" the US President asked.

Monkeys have the physical equipment to produce speech, a new study finds — but they lack the brain wiring for it.

An updated list of potential treatments for Covid-19.