One boy and his dog fight against air pollution
After conducting his own research, 13-year-old Tom discovered a worrying problem about air pollution.
By placing an air monitor on his dog Baggy's collar, Tom found that pollution levels outside schools are two thirds higher at a small child's height.
According to the readings on Baggy's monitor, pollution levels increase the nearer you are to the ground.
We caught up with Tom about his important research and what he plans to do next.