|a1 videodiscs (ca. 150 min.) :|bsd., col. ;|c4 3/4 in.
500
|aChinese title:大地的聲音
500
|aOriginally broadcast as a BBC Production in 2000.
505
0
|aPart one: Is there a crisis? -- Part two: Why is there a crisis? -- Part three: The future of life.
511
1
|aHost, David Attenborough.
520
|aDeforestation, global warming, depletion of aquifers, rising sea levels, and mass extinctions--how much longer can Earth compensate for these damaging forces? In this timely three-part series, David Attenborough and some of the world's leading experts on environmental matters consider probably the most important issue of the 21st century: the future of life on this planet.