The Chinese artist-activist Ai Weiwei was denied entry to Switzerland and is among thousands affected by Portugal's visa ...

In a leap for urban ecology, researchers have unveiled a cutting-edge method to dynamically estimate seasonal tree heights in ...

Chinese artist Ai Weiwei was recently barred from entering Switzerland after he was unable to produce a visitor's visa.

The MET's director and CEO Max Hollein of Indian art in the New York museum, the responsibilities and possibilities for ...