Lithuania is a small country with a big problem. After a series of perceived slights, China has brought its massive economic leverage to bear on the tiny Baltic state. Pressure increased dramatically in recent weeks after Taiwanese officials opened a de facto embassy in the Lithuanian capital using the island’s name. (The many other such offices around the world, ...

Over the past few weeks, Alaska recorded record-high temperatures, scientists released a “report card” showing relentless deterioration of the Arctic’s climate, and researchers warned that an ice shelf in Antarctica could collapse within a few years, dramatically increasing the region’s contribution to rising sea levels. These are signposts on a grim path. They show that damage to the cryosphere, the ...

  Bloomberg US aviation regulators granted approvals that will allow some jetliners to operate within zones where new 5G wireless services are set to begin Wednesday, significantly reducing the potential impact on flight schedules. The Federal Aviation Administration said airline manufacturers had shown that the mobile-phone signals won’t cause interference with critical aircraft equipment on certain Airbus SE and Boeing ...