New York Times:

The Food and Drug Administration will propose sweeping new rules on Thursday that for the first time would extend its regulatory authority from cigarettes to electronic cigarettes, popular nicotine delivery devices that have grown into a multibillion-dollar business with virtually no federal oversight or protections for American consumers.

One effect of the new regulations, once they're finalized, will be a ban on selling e-cigarettes to minors. One thing the new regulations won't do: ban flavors, "like bubble gum and grape," the Times reports, "that public health experts say lure children to use the products."