Credit Margaret Bourke-White / Time & Life Pictures/Getty Images
American astronomer Edwin Hubble looks through the eyepiece of the 100-inch telescope at the Mount Wilson Observatory in Los Angeles, 1937. In 1929, Hubble proposed that the more distant a galaxy is, the faster it appears to be receding from us, a concept that has become known as Hubble's law.
President Obama prepares to board Air Force One before departing Andrews Air Force Base for Philadelphia on Tuesday. He heads to Hawaii this week, where the U.S. is hosting the Asia-Pacific Economic Cooperation forum.
President Obama flies to Honolulu on Friday to begin the third Asia trip of his presidency. He'll visit Hawaii, Australia and Indonesia in a nine-day trip that's meant to reaffirm a fundamental shift in America's foreign policy.
Secretary of State Hillary Clinton has described this reorientation as "America's Pacific Century."
Credit The Magnes Collection of Jewish Art and Life
Credit Ben Blackwell / SFMOMA
It took a little while for Leo Stein to warm up to Henri Matisse's wildly colored 1905 painting Woman with a Hat. But he kept going back to see it at the Grand Palais, and finally bought it for 500 francs.
Credit Estate of Daniel M. Stein
Henri Matisse works on a portrait of Michael Stein in 1916.
Credit J.P. Kuhn / ISEA Zurich
This 1878 Cezanne portrait was the first in Gertrude and Leo Stein's collection. Cezanne has painted his wife's right eye completely black.
Credit / Metropolitan Museum of Art
At the Steins' apartment, Picasso saw the portrait in which Cezanne had painted his wife's eye black. Picasso tried the technique for himself in this 1906 self-portrait.
A reunion of art is taking place in Paris right now. Works that haven't been there together in almost a century are reunited once again. The art was collected by writer Gertrude Stein and her brothers starting in the early 1900s. The Steins bought paintings right out of the studios of young avant-garde artists — Pablo Picasso, Henri Matisse and others who would become masters as the 20th century progressed.
A new SipSmart kiosk awaits customers at Caputi's, a sports bar in suburban Buffalo, N.Y. Customers swipe a credit card and then blow into a plastic mouthpiece attached to the side of the machine. Seconds later, their blood-alcohol level flashes on the screen.
Imagine driving without a speedometer and still trying to go the speed limit. Chris Montag, chief operating officer of Ladybug Teknologies, says that's analogous to going out drinking without a Breathalyzer.
"It's something we've done for hundreds of years, and nobody's ever had a tool and we guess ... that we're OK," Montag says. "But, really, how do you know when you've never been able to measure it?"
Lawmakers in Jefferson County, Ala., voted Wednesday to file for bankruptcy. It will be the largest municipal bankruptcy in U.S. history. For more, Guy Raz talks with Tanya Ott of member station WBHM in Birmingham.
Penn State football coach Joe Paterno announced Wednesday he would resign at season's end. The coach is seen here during the 2002 season, several months after a graduate assistant informed him of seeing alleged sexual abuse in a locker room shower.
For nearly half a century, Penn State football has been the model for how to run a successful — and clean — college sports program. And coach Joe Paterno has been its leader, revered in all quarters not only for winning games but for his virtuous, fatherly leadership.
That all changed this week, with the arrest of former assistant coach Jerry Sandusky on 40 criminal counts related to the alleged sexual abuse of minors. In addition, two top university officials have been charged with perjury and failing to report allegations to police.
Ohio voters on Tuesday resoundingly repealed a controversial law that would have severely limited collective bargaining for public employees, a law Republican Gov. John Kasich made the centerpiece of his legislative agenda this spring.
Voters not only disliked Kasich's law — 61 percent voted to repeal it, 39 percent supported keeping it — they also have grown to dislike Kasich. The governor's approval rating was at 36 percent in an October Quinnipiac poll.
Those were finger nails working their way across a chalkboard. Some of you might have felt a shiver. It's one of those sounds that provokes a physical reaction. Scientists have looked into the why foryears and this week, scientists presented another theory at the Acoustical Society of America meeting.
When the Republican presidential candidates meet Wednesday evening in Michigan for their ninth debate (it feels like there've been many more than that) the main topic up for discussion is supposed to be the economy.
But is there anyone who expects that the travails of Herman Cain won't be a subtopic?
The former Godfather Pizza CEO's flat-tax plan encountered severe turbulence at the last debate and it is likely to experience more during the encounter at Oakland University outside Detroit.