answer: #Person2# went to a global warming rally at weekend. #Person2# tells #Person1# there're lots of things they can do to prevent more damages, like using public transportation and using unleaded petrol, etc. #Person1#'s surprised #Person2# is such an environmentalist.
documents: #Person1#: What did you do over the weekend?
  #Person2#: I went a global warming rally. It was fantastic to be around so many people who care about the environment.
  #Person1#: Do you think there's anything we can do to reverse the damage that's been done already?
  #Person2#: 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.
  #Person1#: Like what?
  #Person2#: Well, we can use public transport instead of taking our cars for a start.
  #Person1#: What else can we do to protect the environment?
  #Person2#: 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.
  #Person1#: How about recycling? Does that actually help?
  #Person2#: Yes. You should take your glass, paper, plastic, cardboard, and tin cans to a recycling center.
  #Person1#: What do you think the biggest worry for our future is?
  #Person2#: I think that the issue of greatest concern is having enough sources of clean water for everyone.
  #Person1#: I had no idea you were such an environmentalist before!
  #Person2#: To be honest, in order for the earth to continue to be a habitable place, we're all going to have to become more interested in the environment.