At any given moment, about 15,000 men and women are living in solitary confinement in the federal prison system, housed in tiny cells not much larger than a king-sized bed.
"It is hard to describe in words what such a small space begins to look like, feel like and smell like when someone is required to live virtually their entire life in it," says Craig Haney, a psychologist at the University of California, Santa Cruz.
But Tuesday, Haney, who has studied life inside prisons for three decades, had an opportunity to paint that picture.
Advocates for prisoners rights say too many inmates spend years in solitary confinement — in violation of the constitutional bar against cruel and unusual punishment. Today, they persuaded the U.S. Senate to hold the first hearing on the issue, as state and federal prison systems fend off new lawsuits over the practice.
The federal government could soon give the final go-ahead for Royal Dutch Shell to begin drilling for oil in the Arctic Ocean. Shell has spent $4 billion since 2007 to prepare for this work, and is hoping to tap into vast new deposits of oil.
But the plan to drill exploratory wells is controversial — opposed by environmental groups and some indigenous people as well.
The party that won Greece's parliamentary elections on Sunday has accepted the tough conditions international lenders imposed to bail out the ailing nation. But there's been talk that the party wants to seek some concessions on the terms of the rescue package.
At the G-20 summit in Los Cabos, Mexico, German Chancellor Angela Merkel reiterated her tough line that bailout terms for Greece are not negotiable. After the summit, Merkel returns to a German electorate that is now fed up with a debt crisis that only seems to grow and worsen.