what did you do over the weekend ?   I went a global warming rally in London . It was fantastic to be around so many people who care about the environment .   do you think there's anything we can do to reverse the damage that's been done already ?   it might not be possible to fix the problems that we've created for ourselves , but there are lots of things we can do to prevent more damages from happening .   like what ?   well , we can use public transport instead of taking our cars for a start .   what else can we do to protect the environment ?   if you do have to drive , you should make sure that your car runs on unleaded petrol . Also , your home should use sources of renewable energy . 