Hong Kong leader Carrie Lam on Tuesday added to a raft of attempts by local and Beijing officials to provide reassurance that proposed national security laws would not trample on the city's rights and freedoms, amid widespread concerns.
The White House on Monday brought forward by two days restrictions on travel to the United States from Brazil as the number of deaths from the new coronavirus in the South American nation surpassed the U.S. daily toll.
Due to high risk for researchers, the imaging of active volcanoes has so far been a great challenge in volcanology. Scientists used a drone for a series of repeated survey flights with optical and thermal imaging cameras at the Santa Maria volcano in Guatemala. A regular and systematic survey of dangerous volcanoes with drones seems to be close.