Kid News This Week: China protests, 3D printer plastic recycler, spring early in UK, NZ rat-catchers

Kid News This Week: Unusual protests in authoritarian China, two young inventors create plastic recycle machine that makes 3D printer filament, spring comes early in UK – what are the knock-on effects? – and down under in New Zealand some young and enthusiastic rat-catchers help save kiwi birds by ridding the island of rodents