Caption: image: Global Panorama
Beijing issues advance red alerts for smog
After criticism for not issuing air pollution red alerts in time, Beijing now moves more quickly
Beijing Tag
Caption: Rio’s Arena of the Future will be transformed into new schools (image: André Motta/brasil2016.gov.br ).
Rio Olympics legacy hopes to match London and Beijing
City authorities cite transport improvements but residents are sceptical about post-Games mobility
Caption: The polluted waters of Rio’s Guanabara bay are a breeding ground for zika vectors (image: Carlos Perez Couto
).
Zika fears could ruin Rio Olympics
Alongside water pollution and security, spreading virus could deter visitors to XXI Olympiad