Sir David Attenborough has warned of the "disastrous" delays in taking action on climate change.
The naturalist and veteran broadcaster said the "alarming" thing is that other issues are going to "take priority and take world leaders' attention from this urgent problem".
Sir David, 89, was talking ahead of his latest documentary about the Great Barrier Reef and as the United Nations conference on climate change takes place in Paris.
Barack Obama's greatest struggle on climate change could be convincing the conspiracy theorists at home that it's not a hoax.
People across the globe have posed their questions for President Obama as he takes part in the UN Climate Conference in Paris.
The Prince of Wales said world companies 'pay no attention' to the damage their supply chains cause to forests.