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Brazil – Analyses

Are Olympic athletes, officials, reporters and spectators at risk travelling to this Zika-affected city? Marcelo Sayao/AAP

Will Zika virus cast a shadow over the Rio Olympics?

The outbreak of mosquito-borne Zika virus in South America has cast a shadow over preparations for the Olympic and Paralympic Games to be held in Rio de Janerio.
Fumigation to prevent possible spread of the mosquito Aedes Aegypti in Sao Paulo. SEBASTIAO MOREIRA/EPA

Is the Zika panic over?

The number of new Zika-related microcephaly cases in Brazil is falling. But it’s too early to relax.
Species lost from the eastern forests of the U.S. – from left to right: Ivory-billed Woodpecker, Passenger Pigeon, Carolina Parakeet and Bachman’s Warbler. Alexander C. Lees ©Cornell University Museum of Vertebrates

Will we soon see another wave of bird extinctions in the Americas?

The extinction threat you haven’t heard of: several South American birds teeter on the brink of existence due to habitat loss. And history is not the best guide for how to save them.