Have you heard of 'global warming'?
Explorer, scientist and global traveller Phoebe looks at global warming. Many scientists say the temperature on Planet Earth is getting warmer because transport, factories, farming and power stations are adding 'greenhouse gases' to the atmosphere.
Scientists think global warming could cause changes in the weather all over the world and might harm the environment, animals and humans. We can help to solve these problems by reducing greenhouse gases in the atmosphere and one way to do that is by finding ways to travel that are environmentally friendly; what we call sustainable travel.