Machu Picchu, the famous 15th-century Inca site in southern Peru, is up to several decades older than previously thought, according to a new study led by Yale archaeologist Richard Burger.
Burger and researchers from several U.S. institutions used...
Video images capture for the first time in live animals the inexorable spread of the COVID-19 virus, tracking the infection as it moved from the noses of mice to the lungs and other organs over the course of six days, in a new study led by researchers at...
Indian states are deploying a new policy tool that shows potential to reduce their high air-pollution levels, which are estimated to have caused nearly 1.7 million deaths, or 18% of all Indian deaths, in 2019.
The policy tool — an emissions trading system...
Tyrannosaurus rex, the fearsome predator that once roamed what is now western North America, appears to have had an East Coast cousin.
A new study by Yale undergraduate Chase Doran Brownstein describes two dinosaurs that inhabited Appalachia — a once...