Science

The average life expectancy of Americans fell precipitously in 2020 and 2021, the sharpest two-year decline in nearly 100 years and a stark reminder of the toll exacted on the nation by...

For now, NASA will press ahead with preparations for a second launch attempt on Saturday of its new moon rocket, with agency officials saying on Tuesday that they hoped to work around...

Paxlovid, the Covid-19 treatment made by Pfizer, reduced hospitalizations and deaths in older patients during the Omicron surge in Israel earlier this year, but made no difference for patients under 65 at...

Aug. 29, 2022, 5:00 a.m. ETAug. 29, 2022, 5:00 a.m. ETThe Orion capsule at NASA’s space environments simulation facility at Plum Brook Station.Credit...Marvin Smith/NASAFor astronauts to get to the moon, they need...

“We are going.”That is the catch phrase that NASA is using in the lead-up to the debut flight of its new moon rocket, which could launch as early as Monday at 8:33...

Updated Covid vaccines, expected soon after Labor Day, were designed to thwart Omicron variants. But money to distribute them has dried up.

ABU DHABI, United Arab Emirates — Iranian officials have worried for years that other nations have been depriving them of one of their vital water sources. But it was not an upstream...

Parents seeking therapy for teenagers who self-harm or suffer from anxiety, depression or suicidal thoughts face an imposing thicket of treatment options and acronyms: cognitive behavioral therapy (C.B.T.), parent management training (P.M.T.),...

Lab rats have rights. Before researchers in the United States can experiment on the animals, they need approval from committees that ensure they follow federal regulations for housing and handling the creatures...

The dugong, a species of so-called sea cow that roams the ocean floor in Asia and Africa and is said to have inspired ancient legends of mermaids, has been spotted off China’s...