These Conservationists Are Desperate to Defrost Snake Sperm
b"It\\u2019s hard to pick which species to save in Brazil right now. Yellow fever is tearing through primate populations, wiping out squirrel and howler monkeys. Poachers are nabbing giant anteaters for meat and blue macaws to sell as exotic pets. But conservation biologist Rog\\xe9rio Zacariotti wants to save a venomous yellow viper\\u2014the golden lancehead. But the snake isn't making it easy for him.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices"