Updated at 4:23 p.m. ET

A Wisconsin prosecutor said Tuesday that a police officer who shot and killed Tony Robinson, an unarmed man in Madison who witnesses say was behaving erratically, in March will not be charged in the case.

Dane County District Attorney Ismael Ozanne said Officer Matt Kenny's shooting of Robinson, 19, on March 6 was the result of the "lawful use of deadly police force."

Nicole P. Eramo, an associate dean of students at the University of Virginia who handles reports of sexual assault for the school, is suing Rolling Stone magazine over the way she was depicted in a now-discredited story.

Eramo has filed suit against Rolling Stone LLC, parent company Wenner Media LLC, and Sabrina Rubin Erdely, the author of the article called "A Rape on Campus," which painted a harrowing picture of a rape and its cover-up at UVA. The complaint was filed in the Charlottesville, Va., circuit court. Eramo is seeking a total of $7.85 million.

Instead of being destroyed or altered, the notoriously scary statue of Lucille Ball that graces her hometown in New York will be moved to a new National Comedy Center that's being built nearby.

Democrats in the Senate have blocked — for now — a vote on the fast-track trade authority that President Obama had sought and Republicans had supported.

The tally was 52 to 45 in favor, eight short of the 60-vote threshold needed to take up the bill.

It's a rebuke to Obama, who has made the trade bill a key part of his second-term agenda, from his fellow Democrats.

A regional crackdown on human trafficking in Southeast Asia could have an impact on thousands of Bangladeshi migrants and Rohingya, the ethnic group that has been the target of discrimination in Myanmar.

Updated at 3:02 p.m. ET

A Marine Corps helicopter helping with earthquake relief efforts in Nepal has been declared missing, but a Defense Department official said that so far there has been no indication it crashed.

U.S. Army Col. Steve Warren said an Indian helicopter nearby heard radio chatter from the Marine aircraft about a possible fuel problem. NPR's Tom Bowman says the U.S. cannot confirm the Indian account.

For the second-straight year, Washington and Minnesota took the top two spots on an annual list of states that are best for cyclists. But the League of American Bicyclists' rankings also show that no state scored higher than 67 points out of 100.

Last on the list was Alabama, which has occupied the No. 50 slot in four of the past eight rankings. The state earned a score of 12.3 points.

The U.S is home to the most Christians in the world, but the number of Americans who identify as Christian is declining, according to a newly released survey by the Pew Research Center. The survey of more than 35,000 Americans also found the number of people who consider themselves unaffiliated with any religion, or "nones," is growing.

According to Pew:

For the third time this year, a blogger has died after a brutal attack on a street in Bangladesh. The writer Ananta Bijoy Das was killed by men wielding machetes. He wrote for the same blog founded by Avijit Roy, a Bangladeshi-American who died in a similar attack in February.

Vienna has introduced new same-sex and opposite-sex themed crosswalk signals at 49 intersections across the city.

The signals are a more playful take on traditional signals, which usually portray a single, gender-neutral person. The new signals feature a same-sex couple or an opposite-sex couple united by a little heart. Via the city's municipal lighting department, here are some pictures:

In a statement, the city's mayor said the new signals are "a sign of openness and tolerance."