Vienna recently installed traffic lights that use same-sex couples to signal "walk" and "stop." It's a show of the city's acceptance and welcoming of the LGBT community, but it turns out people also pay better attention to the new lights, even if they're snapping photos.
What makes a dog bold or shy, eager or sullen? The Veterinary University of Vienna's Clever Dog Lab aims to find out. The results could improve the training and selection of dogs that serve society. Ari Daniel Shapiro of our partner program NOVA reports.
For Wednesday's Geo-Quiz, we take you to Vienna, in search of a famous museum. Recently, this museum featured a special exhibit featuring nude men. And, it turns out, quite a few people wanted to see the exhibit...in the nude.