How Many People Need Vaccines to Reach Herd Immunity?
A man wears a protective face covering
Scientists Discover How Some Dinosaurs Grew So Big
Dinosaur fossil of Tyrannosaurus Rex
COVID-19 Vaccine May Be Required for International Travelers
A Qantas Airbus A380
Schoolchildren’s Letters to Santa Show Concerns about Coronavirus
Letters from schoolchildren
American Stores Now Selling Used Clothing
Samantha Estes prepares garments to be photographed at the ThredUp sorting facility
Malaysia Group Teaches Refugee Women to Read and Write
Refugees attend a basic English lesson on the outskirts of Kuala Lumpur, Malaysia
America’s First Restaurant Influences the Food We Eat Today
Delmonico’s Restaurant in New York City in an undated photo
Study Suggests People Who Got COVID-19 Protected for Months
Man wearing protective face covering
Can Tents at Restaurants Prevent Coronavirus Infections?
Temporary tents erected outside of a restaurant
Houseplants: Tips for a Winter Hobby
Succulent plants growing in a home