Welcome to our last show of 2021! A security flaw in widely used computer software has sent engineers scrambling to implement a fix. A biologist in South Africa is using his camera to raise awareness about the importance of freshwater. A young pilot makes progress on her quest to set a world record. And a family breaks its own world record for Christmas lights.
Thank you for being the best part of CNN 10! We look forward to seeing you again in early January.