Hilaree Nelson, 49, appears to have fallen into a crevasse on Manaslu while attempting to ski from the summit. Separately, an avalanche killed at least one and left many injured.

Japan is enduring one of its worst heat waves on record, raising concern about potential power shortages amid surging demand, even as officials urged people to keep their air-conditioners running to ward off heat stroke.

Shifts in travel patterns are likely to become more common in Europe, a region that climate researchers describe as a “hot spot” for severe summer heat.

If a new federal policy goes into effect, Americans will have more recourse when airlines cancel or significantly delay flights.