El martes por la mañana, los reguladores federales de salud de Estados Unidos recomendaron una pausa en el uso de la vacuna para la COVID-19 de Johnson & Johnson mientras investigan seis informes de coágulos de sangre en mujeres de entre 18 y 48 años. Una de ellas falleció, y una segunda está hospitalizada en […]

WASHINGTON — The Biden administration is nearing agreements with Japan, South Korea and Canada to bolster carbon emission reduction targets in all four countries ahead of a closely watched summit of global leaders on Earth Day, April 22. But in the latest sign of how difficult it will be for President Biden to make climate […]

The Indian jumping ant, Harpegnathos saltator, has many talents. This inch-long arthropod, found in flood plains across India, has a four-inch vertical leap and the ability to take down prey nearly twice its size. If that wasn’t enough, these amazing ants can also adjust the size of their own brains. In a study, published Wednesday […]

LONDON — Have you seen Darius, the world’s longest rabbit? Four feet long and weighing 50 pounds, the heavyweight bunny should be easy to spot. But he went missing this past weekend, and now the police are involved, appealing for information about his apparent abduction from his home in a small English village. Darius’s owner, […]

Japan said on Tuesday that it had decided to gradually release tons of treated wastewater from the ruined Fukushima Daiichi nuclear plant into the ocean, describing it as the best option for disposal despite fierce opposition from fishing crews at home and concern from governments abroad. The plan to start releasing the water in two […]

Like many women during the pandemic, Alisa Stephens found working from home to be a series of wearying challenges. Dr. Stephens is a biostatistician at the University of Pennsylvania, and the technical and detail-oriented nature of her work requires long uninterrupted stretches of thought. Finding the time and mental space for that work with two […]

In the Australian outback, certain grasses grow in eerie rings, with ramparts of dusty green standing at the edge of wide circles of bare red dirt. Often described as “fairy circles,” these rings of spinifex grass resemble structures first spotted in the Namibian desert, both creating enormous honeycomb patterns across the landscape that really pop […]

Gov. Greg Abbott of Texas may have been overly optimistic on Sunday when he said on Fox News that his state could be “very close” to herd immunity — the point where so much of the population is immune to Covid-19, either from being vaccinated or previously infected, that the virus can no longer spread. […]