Specialized drones are being tested in a program to boost koala numbers on Australia's east coast, dropping seeds of gum trees as part of a World Wildlife Fund (WWF) scheme to regenerate bushland torched in the country's historic bushfires.
원문출처 : https://www.cnn.com/2020/10/20/asia/drones-gum-trees-australia-scli-intl/index.html
원문출처 : https://www.cnn.com/2020/10/20/asia/drones-gum-trees-australia-scli-intl/index.html