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A new attempt to purify New Delhi's notoriously polluted air will see 40 giant fans push filtered air into the heart of the Indian capital's exclusive shopping district. But the "smog tower" of 1.7 million euros is not without skeptics, who say it will not help a city known for having the most polluted air in the world. .

Tokyo 2020's handsome Olympic mascots are dressed over the host city, but they have some serious competition in mascot-crazy Japan, where cuddly characters promote everything from prisons to health examinations. In Hello Kitty and Pokémon Land, adorable creatures give a friendly face to both private companies and public institutions, and the most successful have full celebrity status. .