Ministers are considering spending up to £12 billion on a database to monitor and store the internet browsing habits, e-mail and telephone records of everyone in Britain.

GCHQ, the government’s eavesdropping centre, has already been given up to £1 billion to finance the first stage of the project.

A quarter of the world’s mammals are threatened with extinction, an international survey showed on Monday, and the destruction of habitats and hunting are the major causes.

The report, the most comprehensive to date by 1,700 researchers, showed populations of half of all 5,487 species of mammals were in decline. Mammals range in size from blue whales to Thailand’s insect-sized bumblebee bat.

More than half of all frogs, toads and newts living in Europe could be driven to extinction within 40 years as climate change, diseases and habitat destruction take their toll, scientists warned last night.

The majority of the most threatened species live in Mediterranean regions, which are expected to become warmer and drier. Island species, such as the Mallorcan midwife toad and Sardinian brook newt, are especially at risk because they are unable to move to cooler climates.

The Bush administration has overturned a 22-year-old policy and now allows customs agents to seize, read and copy documents from travelers at airports and borders without suspicion of wrongdoing, civil rights lawyers in San Francisco said Tuesday in releasing records obtained in a lawsuit. More News

The records also indicate that the government gives customs agents unlimited authority to question travelers about their religious beliefs and political opinions, said lawyers from the Asian Law Caucus and the Electronic Frontier Foundation. They said they had asked the Department of Homeland Security for details of any policy that would guide or limit such questioning and received no reply.

The earth will warm about 2.4° C (4.3° F) above pre-industrial levels even under extremely conservative greenhouse-gas emission scenarios and under the assumption that efforts to clean up particulate pollution continue to be successful, according to a new analysis by a pair of researchers at Scripps Institution of Oceanography at UC San Diego.

That amount of warming falls within what the world’s leading climate change authority recently set as the threshold range of temperature increase that would lead to widespread loss of biodiversity, deglaciation and other adverse consequences in nature. The researchers, writing in the online edition of the Proceedings of the National Academy of Sciences, argue that coping with these circumstances will require “transformational research for guiding the path of future energy consumption.”