Scientists Finish the Human Genome at Last

The complete genome uncovered more than 100 new genes that are probably functional, and many new variants that may be linked to diseases.

Trash Parrots Invent New Skill in Australian Suburbs

Sydney’s clever and adaptable sulfur-crested cockatoos learn how to pry open garbage bins by watching one another.

Why Vaccinated People Are Getting ‘Breakthrough’ Infections

The vaccines are effective at preventing serious illness and death, but they are not a golden shield against the coronavirus.

A.I. Predicts the Shapes of Molecules to Come

DeepMind has given 3-D structure to 350,000 proteins, including every one made by humans, promising a boon for medicine and drug design.

This Is as Close to a Shark’s Intestines as You’ll Ever Hope to Get

Scientists produced 3-D looks at shark’s guts.

This Butterfly Was the First in North America That People Made Extinct

New research suggests the iconic Xerces blue butterfly may have been its own species.

This Butterfly Was the First in North America That People Made Extinct

New research suggests the iconic Xerces blue butterfly may have been its own species.

PEPFAR Is Still Without a Leader. H.I.V. Activists Want to Know Why.

“Can we not think and act on two pandemics at a time?” asked one epidemiologist.

J.&J. Vaccine May Be Less Effective Against Delta, Study Suggests

Many who received the shot may need to consider boosters, the authors said. But federal health officials do not recommend second doses.

States and Cities Near Tentative $26 Billion Deal in Opioids Cases

The agreement would end thousands of lawsuits against the three largest distributors and Johnson & Johnson and require them to pay billions for addiction treatment and prevention.

Una intervención en el cerebro ayuda a un hombre paralítico a hablar

En un logro antes inimaginado, unos electrodos implantados en el cerebro del hombre transmiten señales a una computadora que muestra las palabras que intenta decir.

Can A.I. Grade Your Next Test?

Neural networks could give online education a boost by providing automated feedback to students.

Caring for the Wildlife That Stray Into the Suburbs

It’s baby-animal season in the towns north of New York. But with many of the mothers gone missing, humans are stepping in to help out.

The Beta Variant: What Scientists Know

The variant can dodge some of the immune system’s defenses, but is still vulnerable to vaccines.

Cats Are Better Than Dogs (at Catching the Coronavirus)

Cats and dogs can be infected by the coronavirus — but cats are more susceptible to infection, a new study suggests.

El misterio de una extinción halla un aliado en un caracol con una computadora a cuestas

Una improbable colaboración ha resuelto un antiguo misterio sobre la supervivencia de los caracoles en las Islas de la Sociedad, en la Polinesia Francesa.

Tapping Into the Brain to Help a Paralyzed Man Speak

In a once unimagined accomplishment, electrodes implanted in the man’s brain transmit signals to a computer that displays his words.

C.D.C. Director Warns of a ‘Pandemic of the Unvaccinated’

Cases, hospitalizations and deaths remain far below last winter’s peak, but the director urged people to get fully vaccinated.

Measuring the Cost of Racial Abuse in Soccer

Plus, fluorescent flying squirrels, aging golfers and more feats of athleticism in the Friday edition of the Science Times Newsletter.

Covid Is Especially Risky for People With H.I.V., Large Study Finds

An H.I.V. infection increases the odds of dying from Covid-19 by at least 30 percent, researchers said.