Celebrated Chinese dissident, architect and artist Ai Weiwei's highly anticipated exhibition "@Large: Ai Weiwei on Alcatraz" will open this fall on September 27th and run through the end of April 2015. The exhibition will feature seven site-specific installations in four different locations on the former federal prison island, three of which are not normally open to the sightseeing public.

Workers will begin assembling @Large: Ai Weiwei on Alcatraz in buildings that are part of the old military and federal prison in late August. It’s a perfect venue for an artist who has riled government officials in Beijing to the point of his own imprisonment.

Tickets to "@Large: Ai Weiwei on Alcatraz" will go on sale June 27. The show, which will feature seven site-specific installations by the Chinese conceptual artist and political activist Ai Weiwei, opens Sept. 27.

In this installment of BioBlitz 2014 video coverage, we highlight the taxonomists whose job it is to find and identify species, and to organize the wide variety of life on earth.

BioBlitz 2014: volunteers have 24 hours, from noon Friday through noon Saturday, to inventory living things - plants, animals, insects, fungi, even bacteria - in the vast Golden Gate National Recreation Area. The goal is to add to the park's official species list and to stress the importance of protecting biodiversity.