蜜芽传媒

Giraffe numbers are plummeting, particularly because of the loss of habitat in east and central Africa. Dr Julian Fennessy is the founder and executive director of the Giraffe Conservation Foundation. He calls it the 'silent extinction'.

(Photo: Thornicroft's Giraffes in South Luangwa National Park in eastern Zambia.)
(Credit: Wolfgang Kaehler/LightRocket/Getty Images)