The other leaked memo: Another document leaked to the British press shows the extraordinary attempts by the Bush administration to undermine Tony Blair's climate-change efforts. The Observer reports:

The documents show that Washington officials:

· Removed all reference to the fact that climate change is a 'serious threat to human health and to ecosystems';

· Deleted any suggestion that global warming has already started;

· Expunged any suggestion that human activity was to blame for climate change.

Among the sentences removed was the following: 'Unless urgent action is taken, there will be a growing risk of adverse effects on economic development, human health and the natural environment, and of irreversible long-term changes to our climate and oceans.'

Another section erased by the White House adds: 'Our world is warming. Climate change is a serious threat that has the potential to affect every part of the globe. And we know that ... mankind's activities are contributing to this warming. This is an issue we must address urgently.'