West Australian: Sir David Attenborough has called for the UK to adopt a "moral" stance on tackling climate change. The 81-year-old nature broadcaster, whose next series for the BBC, Life in Cold Blood, will begin in February, admitted that despite huge shifts in the perception of global warming recently, he can understand why people are reluctant to make change to their lifestyles. "To achieve an agreement in which the world promises, effectively, to lower our standards of living, is a very …