The 'killer' worm threatening livelihoods in Africa
Scientists are warning about the threat to farmers in Africa and beyond from a hungry caterpillar that's already spreading fast. The pest's full name is the fall armyworm. It's native to North and South America, but already has a foothold in tropical Africa and could spread even further afield. Janny Voss from the Centre for Agriculture and Biosciences International (CABI) in the UK explained the damage being caused.
(Photo: The fall armyworm burrows into crops. Credit: CABI)