NewYorkTimes

The coronavirus pandemic has devastated medical tourism, but pent-up demand remains for affordable treatment in foreign lands. View original article Contributor: Ceylan Yeginsu

People with knee arthritis were less likely to report pain and stiffness if they wore stable, supportive shoes, versus flat-soled, flexible ones. View original article Contributor: Nicholas Bakalar

What researchers have learned about the U.K. variant. View original article Contributor: Jonathan Corum and Carl Zimmer

“I want to know,” one twin said, “why did she have Covid worse than me?” View original article Contributor: Katherine J. Wu

The harsh wind-hammered tundra sometimes complicates the prospect, as do the polar bears. But the children are enthusiastic pupils. View original article Contributor: Seth Adams

Perhaps the most exciting aspect of modern hip replacement is the increasing use of robotic surgery. View original article Contributor: Jane E. Brody

For many Egyptians, a video offered a rare and uncensored view of the coronavirus’s real toll at the peak of Egypt’s second wave of the pandemic. View original article Contributor: Mona El-Naggar and Yousur Al-Hlou

“There will be a period of epic withdrawal,” warned one addiction specialist, once schools, activities and social life return to normal. View original article Contributor: Matt Richtel

What’s the transmission risk inside a car? An airflow study offers some insight for passengers and drivers alike. View original article Contributor: Emily Anthes

The President-elect will nominate Eric S. Lander to head the Office of Science and Technology Policy, a post left vacant by President Trump for 18 months. View original article Contributor: Carl Zimmer