A painting by street artist Banksy valued at up to 5 million pounds ($6.3 million) is going up for auction next month.

As the saguaro and Palo Verde trees get ready to bloom, so too are the stages of Tucson flowering with a full garden of ...

The exhibition brings together works by artists from different generations that trace sensorial, non-verbal, spiritual or otherwise invisible but vividly sensed layers of experience.