1.Before you listen:
work in groups,Who is the "greenest" person in your group?
recycle, your own bag, energy-effcient light bulbs, turn off, unplug, buy no more food
2.While you listen:
Save the Planet:talk about the world's environment problems.now more than 6 billions,by 2050 might be 9 billions.
three most important problems.
(1)water: Imbalanced:Gambia:4.5 liters,US:600 liters. Desserts are getting bigger.
(2)animals: less for animals, more for people. the Amazon rainforest in the last 10 years, more than 150000 kilometres square of forest were destroyed.
(3)weather: temperature warmer, ice melting faster than ever before. Sea levels rise.
