Lingering residue from tobacco smoke which clings to upholstery, clothing and the skin releases cancer-causing agents, work in PNAS journal shows.
Berkeley scientists in the US ran lab tests and found "substantial levels" of toxins on smoke-exposed material.
They say while banishing smokers to outdoors cuts second-hand smoke, residues will follow them back inside and this "third-hand smoke" may harm.




Late last Friday, we learned that Obama's Department of Justice plans to go easy on John Yoo and Jay Bybee -- the two assistant attorney generals under Bush who penned the infamous torture memos.
Britain's inquiry into the Iraq war will seek meetings with former members of the Bush administration after taking evidence from Tony Blair and other key British officials, the panel's chairman said Monday.
Tens of thousands of secret documents could contradict evidence given by key members of the Blair government to the Iraq inquiry, its chairman Sir John Chilcot has suggested.
Doing lots of exercise drastically cuts the risk of developing painful gallstones, UK researchers have found. Gallstones are common but only 30% of cases have symptoms and complications.
He said that Mr Straw had been incorrect to suggest, in 2002, that UN weapons inspectors were not being allowed access to certain sites.
People who drink two or more sweetened soft drinks a week have a much higher risk of pancreatic cancer, an unusual but deadly cancer, researchers reported on Monday.
Terrorists who want to overthrow the United States government must now register with South Carolina's Secretary of State and declare their intentions -- or face a $25,000 fine and up to 10 years in prison.






























