Worldwide COVID lockdowns last year reduced air pollution, but most countries exceeded WHO safety guidelines.
Wane was UN assistant secretary-general for peacekeeping and held several high-level African Union posts.
Here is the list of nominees for the main categories for the Academy Awards, to be announced on April 25.
Saudi-led coalition says Houthis fired two missiles, which landed in uninhabited border areas.

Gamers discuss the successes and challenges of growing the sport on the continent.
Five miners, two rescuers die of suffocation after a methane gas fire in Balochistan – second such disaster in a week.
Thailand and Australia say they will stick with AstraZeneca jab as WHO urges countries to continue using the vaccine.