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The eggs were close to hatching, but Vivian Páez wasn’t sure they would survive. She and her husband Brian Bock, both herpetologists, were incubating nearly 100 temperature-sensitive turtle eggs in their lab at the University of Antioquia in Medellín, Colombia. Bock studies the critically endangered Magdalena river turtle (Podocnemis lewyana), and Páez studies the red-footed tortoise (Chelonoidis carbonarius), which is considered vulnerable. By 17 March, they realized that a lockdown due to COVID-19 was imminent.