Tunulliarfik Fjord has always played an outsize role in global history. One thousand years ago, the Viking Erik the Red settled there, the last outpost in the Norse expansion into North America. When the United States established a protectorate over Greenland during World War II, it built one of its first airports in what is now Narsarsuaq, a large town on the fjord. And now Tunulliarfik is the site of a mining project that has overturned politics on Greenland.

Lidia Morawska has been working in her office for months. You might think that’s because she’s an aerosols expert, and her work is crucial for helping bring the pandemic to heel. But really, it’s because she’s an aerosols expert at Queensland University of Technology, in Australia. The country has recorded only three cases of community transmission of the coronavirus in the past week.

China was mentioned only four times in Joe Biden’s first address to a joint session of Congress, but it shadowed almost every line of the speech. “We’re in a competition with China and other countries to win the 21st Century,” Biden said. His aides describe the president as preoccupied with the challenge from China.

I thought I saw something in the road.It was after 1 a.m. one night in April 2016, and I was heading home from a friend’s house on the outskirts of Atlanta. From a distance, the dark spot looked like an oil stain. Then she turned her head and my headlights lit her face. A woman in dark clothing was standing in my lane on Interstate 75. I pounded the brake, but I was too late.

Editor’s Note: With Lori Gottlieb on book leave, Rebecca J. Rosen, the editor of “Dear Therapist,” begins another month as The Atlantic’s “Dear Therapist” archivist, pointing readers to some of Lori’s most beloved columns. For this month’s “Dear Therapist” roundup, I’ve gathered together a set of columns on one of the topics Lori covers often: parenthood.Parents write to Lori frequently.