Biden Briefs G7 on U.S. Afghanistan Withdrawal

President Biden said Tuesday that the United States was on track to end its two-decade-long military involvement in Afghanistan by his Aug. 31 deadline.

But Mr. Biden, speaking at the White House, said he had spoken to military leaders so they would be prepared to “adjust that timetable, should that become necessary.”

U.S. forces are still working around the clock to evacuate Americans and some of their Afghan allies from Kabul, the capital.

“It is a tenuous situation,” he said.

Mr. Biden gave reporters a barrage of figures about the accelerating evacuation effort at the Kabul airport, saying 70,700 people

Rain in Greenland: A Glaciologist Explains a Rare and Dangerous Event

DER SPIEGEL: In fact, the Arctic is warming more dramatically than any other part of the world. What does that mean for Greenland?

Ahlstrøm: In recent decades, circulation patterns in the atmosphere have changed. We have evidence that warm air is reaching the ice sheet more and more frequently. This has to do with changes in the jet stream. They ensure that the air over Greenland in summer comes less frequently from the far north – and very often from the mid-latitudes, where it is warmer.

The Summit Station was established in 1989. The purpose was to support a research