British broadcaster and environmentalist David Attenborough urges world leaders, meeting in Poland to agree ways to limit global warming, to get on and tackle "our greatest threat in thousands of years".
Tributes have been paid to renowned naturalist and broadcaster Sir David Attenborough who has turned 90.
British broadcaster and environmentalist David Attenborough urges world leaders, meeting in Poland to agree ways to limit global warming, to get on and tackle "our greatest threat in thousands of years".
Tributes have been paid to renowned naturalist and broadcaster Sir David Attenborough who has turned 90.
