This summer, the AMA published the findings of a survey of 537 medical residents from around the country, in which 57 percent of residents said they'd worked while sick, the Kansas City Star reports.

CNN: Food workers, nurses forced to work sick

In recognition of Earth Day, which marks its 30th anniversary Saturday, environmental leaders from around the country are gathered in Washington, D.

CNN: Earth Charter sets course for sustainable living

Coalition officials now estimate the paramilitary Fedayeen Saddam and other Iraqi secret services, spread all around the country rather than hunkering down near Baghdad, number tens of thousands more than they'd initially suspected.

CNN: War Strategy: Planners must ask 'What if?'