Cargo flight operations were halted for about three hours at Germany’s Leipzig/Halle Airport in the early hours of Thursday due to a protest by Last Generation climate activists. Some of the demonstrators glued themselves to the ground in the airport’s southern area, a police spokesman said, adding that a helicopter is currently searching the area for further activists. As a result of the action, cargo flight operations were halted for about three hours after midnight (2200 GMT Wednesday), an airport spokesman said. One of the two runways has since been cleared for use, but there may be delays…