Instead of catching fish, rats and other life, it's becoming increasingly popular for scientists to look for tiny bits of DNA the ceratures left behind: hair, scales and feather, in an effort to protect biodiversity.

为了保护生物多样性，科学家们不再捕捉鱼、老鼠和其他生物，而是热衷于寻找这些生物留下的微小的DNA片段：毛发、鳞片和羽毛。