Brazil's first fossils were believed to be from monsters por Enrico Di Gregorio
Fossilized feces contain traces of parasites that can still infect animals por Enrico Di Gregorio
Hurricane decimates pollinating hummingbirds por Redação
Miguel de Barros: The sea swallowing the land por Marcos Pivetta
Bird flu can be transmitted between mammals por Guilherme Costa
Butantan vaccine candidate reduces the risk of severe dengue fever by 89% por Ricardo Zorzetto