The Supreme Court has ordered the government to cut the level of nitrogen dioxide in Britain's air.
Campaigners claim pollution causes 29,000 early deaths a year in the UK - more than from obesity and alcohol combined.
ITV News Consumer Editor Chris Choi reports from Birmingham, one of the worst affected cities.
Buses and haulage fleets could be for the chop as UK is obliged to form urgent new air pollution planRead the full story ›
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The Government has been ordered by the UK's highest court to take immediate action over its obligations under European law on air pollution limits.
Judges at the Supreme Court ruled that the "Government must prepare and consult on new air quality plans for submission to the European Commission ... no later than December 31 2015".
It comes after environmental campaigners ClientEarth launched a case against the government over its "ongoing breach" of European Union law on limits of nitrogen dioxide in the air.
Announcing the decision, Lord Carnwath said: "The new government, whatever its political complexion, should be left in no doubt as to the need for immediate action to address this issue."
A Defra spokesperson said that “air quality has improved significantly in recent years".
They added: "As this judgement recognises, work is already underway on revised plans (since February 2014) to meet EU targets on NO2 as soon as possible.”
A man who has been battling a bank for 16 years over payments for a laptop has won his Supreme Court case.
Richard Durkin bought the computer at a PC World store in Aberdeen in 1998 and signed a credit agreement with lender HFC Bank for about £1,500, the court heard.
He returned the computer the next day because it did not have an internal modem and asked for the credit agreement to be cancelled.
But HFC said he had to keep making payments and after he refused the bank issued a default notice.
Mr Durkin's name appeared on a credit 'blacklist' for several years as a result, the court heard.
The 44-year-old says he has spent around £250,000 on legal fees since his challenge began, but the Supreme Court ruled that he should be paid only £8,000 in damages after it found that he "validly" rescinded the agreement.
The Midwest US state of Missouri has executed a man convicted of killing a jewelry store owner during a 1991 robbery after the US Supreme Court denied last-minute appeals that in part challenged the drug used in the execution, the state's top lawyer said.
"After the United States Supreme Court vacated three separate stays of execution on January 29, 2014, Herbert Smulls was executed for the 1991 murder of Stephen Honickman," Missouri Attorney General Chris Koster said in a statement.
Scientologist Louisa Hodkin - who wants to marry in a Church of Scientology chapel - won a Supreme Court battle today when judges ruled that the Scientology church was a "place of meeting for religious worship".
The Supreme Court will rule today on whether doctors should have been allowed to withhold treatment from a "gravely ill" man.
Liverpool guitarist David James, who was in his late 60s, died 10 months ago, shortly after the Court of Appeal decided that withdrawal of treatment would be in his best interests.
His widow May has asked the Supreme Court to overrule that decision.
The owners of a bed and breakfast who refused to let a gay couple share a room in their hotel said they found the whole situation "thoroughly regretful" but have vowed to continue their legal fight.
Hazelmary and Peter Bull are taking their appeal to the Supreme Court tomorrow after they were ordered to pay £3,600 to civil partners Martyn Hall and Steven Preddy in 2008, to the Supreme Court.
Mrs Bull told Daybreak they "clearly stated" they only allowed married, heterosexual couples to share beds in the 28 years they ran the Chymorvah Hotel in Cornwall.
For divorcees, who suspect their partners have been hiding their money in their businesses, there was an important legal ruling today.
Social Affairs Editor Penny Marshall reports: