Police fired tear gas and wielded batons Monday to stop about 7,000 students protesting cartoons of the Prophet Muhammad from marching on the governor’s residence in northwestern Pakistan.

For some young people, a popular method for getting a quick high is by misusing laughing gas — and lately ... about the misuse of nitrous oxide and substances in general, Saltz said.

WASHINGTON — Health officials want you to think twice before buying one of those brightly colored little bottles often sold at gas stations ... federal Controlled Substances Act, which ...

It's illegal to market or sell the drug, but it's also not on the list of federally controlled substances. And while it's in products sold at gas stations and other stores, it's also available to ...