1 is the earth being squeezed dry?
part i getting ready
part ii the earth at risk (i)
part iii the earth at risk (ii)
part iv more about the topic: the effects of global warming
part v do you know ...?
part vi reminder of key points in this unit
2 let birds fly
part i getting ready
part ii christmas bird counts
part iii dolphin captivity
part iv more about the topic: birds -- a source of wealth
part v do you know ...?
part vi reminder of key points in this unit
3 ei nino? la nina?
part i getting ready
part ii ei nino
part ili lick observatory
part iv more about the topic: the national climatic data center
part v do you know ...?
part vi reminder of key points in this unit
4 reports on disasters & accidents
part i getting ready
part ii hurricanes & tornadoes
part iii earthquakes
part iv more about the topic: earthquake tips
part v do you know ...?
part vi reminder of key points in this unit
5 people&places(i)
part i getting ready
part ii canada
part iii traveling around australia
part iv more about the topic��the story of denv6r
part v do you know��?
part vi reminder of key points in this unit
6 people&places(11)
part i getting ready
part ii new zealanders
part iii what do you think of britain?
part iv more about the topic��native peoples of alaska
part v do youknow��?
part vi reminder of key points in this unit
7 aspects of education(i)
part i getting ready
part ii are you a good language learner?
part iii foreign accents
part iv more about the topic��how to enlarge your vocabulary?
part v do you know��?
part vi reminder of key points in this unit
8 aspects of ed ucation(ii)
part i getting ready
part ii home schooling
part iii uk or us education?
part iv more about the topic��co��educational or segregated schools?
part v do you know��?
part vi reminder of key points in this unit
9 a kaleidoscope of culture
10 a glimpse of the age
11 enjoy artistic beauty
12 review