Sculpture made from recycled solar tubes

A view of the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif. Berkeley artists Ronald Rael and Virginia San Fratello have created the art installation "SOL Grotto" by using an estimated 1,400 of the 24 million unused specialized glass tubes to be used in tubular solar panels made by now bankrupt solar power firm Solyndra. The installation is part of a larger exhibit at the UC Berkeley Botanical Garden called "Natural Discourse" that runs through January 2013.

A U.C. Berkeley Botanical Gardens visitor looks at the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A view of the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A U.C. Berkeley Botanical Gardens visitor uses a cellular phone to photograph the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A view of the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A U.C. Berkeley Botanical Gardens visitor looks at the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A view of the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A U.C. Berkeley Botanical Gardens visitor looks at the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A view of the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A U.C. Berkeley Botanical Gardens visitor looks at the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A U.C. Berkeley Botanical Gardens visitor walks by the art installation "SOL Grotto" by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A U.C. Berkeley Botanical Gardens visitor uses a cellular phone to photograph the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A spider is seen crawling in a glass tube that is part of the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.

A view of the art installation "SOL Grotto" that was made by using glass tubes that were to be used by the now defunct solar company Solyndra on Aug. 23, 2012, in Berkeley, Calif.