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"The plain, simple, overwhelming fact of the matter is that since I started making programs, there are three times as many people on the Earth," he said. "It is inevitable that you are going to make huge inroads into what was wild nature and that process is going on. It's going to get worse before it gets better."
Attenborough, younger brother of film director Richard, agreed with some scientists' prediction that it was too late to reverse the impact of climate change. "Whatever we do now the world is going to change. The question is can we slow down those changes or reduce them? One clutches at straws to try and find something in this bleak picture which is not deeply depressing."
Among those straws are the fact that governments are taking the issue seriously and popular awareness of the dangers climate change poses to the environment has spread.
"People recognize that the only conceivable way in which you'll save the life in the sea and the climate in the air is by international agreement," he explained. "It's damned difficult."
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http://www.reuters.com/article/environmentNews/idUSL1815767820080418?pageNumber=2&virtualBrandChannel=0