Unlike the poultry in commercial farms, which are kept in isolation, these chickens and ducks are free to roam, and contract bird flu.

ECONOMIST: Animal and human health

With no natural predator, scientists say, the crayfish was free to roam from where the Nile meets Egypt's Mediterranean coast, down toward the arid nation's border with Sudan.

CNN: Egypt's crayfish invasion

Elk, deer and wildlife are able to roam free on the UNESCO World Heritage Site, which opened in 1925.

CNN: Discover golf's top luxury retreats

Her new novel Bear Witness tells the story of an activist who fights for bears to roam free in Scotland.

BBC: Bringing bears to Scotland to be debated at Lochinver

Haggith's new novel Bear Witness tells the story of an activist who fights for bears to roam free in Scotland.

BBC: 'Enthusiasm' for bringing bears and lynx back to Scotland

Officials at a south Wales prison have rejected reports that a proposed hostel for ex-offenders will allow "perverts to roam free".

BBC: 'Pervert' hostel claim denied

But, like John Belushi and the other pranksters from Animal House, the creatures of Wall Street, no matter how awful their actions, continue to roam free.

FORBES: Feds Put Wall Street On 'Double Secret Probation'

They will be free, he says, to roam on grassy areas between the sheds.

ECONOMIST: Industrial dairy farming

And similarly, the TTfone Basic Big Button comes sim free and without the capacity to roam the mobile internet.

BBC: In search of simple phones

When monsters roam free, we assume that people in positions of authority ought to be able to catch them if only they did their jobs.

NEWYORKER: In Plain View