Race heats up with one week until Iowa caucuses, former NYC Mayor Michael Bloomberg weighs 2016 presidential bid, and more of the stories you’re clicking on. Source

In an op-ed for the Washington Post, President Obama urged the nation to rethink the use of solitary confinement among juveniles in federal prison. CBSN’s Contessa Brewer has the details. Source

A petition is circulating calling for six high school seniors in Phoenix, Arizona to be expelled after they posed for a picture wearing T-shirts that spelled out the N-word. CBSN’s Contessa Brewer reports. Source

New research shows colon cancer rates are on the rise among men and women younger than 50 years old. CBSN’s Contessa Brewer has more on the alarming numbers. Source

The American Heart Association says underlying causes and symptoms of heart attacks are often different for women than men, and many women don’t know what to look for. CBS News’ Adriana Diaz reports. Source

At least 29 people died in this weekend’s blizzard in the East Coast, 11 of whom were from shoveling snow. A national study found more than 1,600 people died of heart attacks related to snow removal from 1990 to 2006. Dr. Tara Narula, cardiologist at Lenox Hill Hospital in New York, joins “CBS This Morning” to discuss how you can protect yourself from snow shoveling risks. Source

The early 20th century painter Ernst Kirchner was a pioneer of Expressionism, yet he and his creations aren’t as widely-known as his contemporaries. His daring depictions of prostitutes and the street life of Berlin and Dresden in the early 1900s changed the course of modern art, yet his persecution at the hands of the Nazis heralded tragedy. Margaret Brennan reports. Source

It was an aviation pioneer, and became a symbol of America during the Golden Age of air travel. But while Pan Am no longer flies the friendly skies, many of the women who proudly wore the Pan Am uniform talked with Conor Knighton about the glory days – when flying was glamorous, complete with gourmet food on board. Source

Until recently, Tim Harris, of Albuquerque, New Mexico, was the only restaurant owner in the country with Down syndrome. But what drives a restaurateur who has lived for his business to close up shop? A girl he loves more than anything. Steve Hartman reports. Source

President Barack Obama will spend time this coming year – his last in office – reflecting not only on what he’s accomplished, but on what he hasn’t. Mr. Obama spoke with Lee Cowan about the end of his term and the beginning of a life after the Oval Office. Source