W.S. Merwin is one of the nation's greatest living poets and is the author of more than 50 books. In a house he built on the island of Maui, he cultivates his other life long passion: gardening.

By PBS News Hour

The California Academy of Sciences, founded in 1916, has a new home in a modern, energy-efficient building in San Francisco, aimed at raising public awareness of the natural world. Spencer Michels explores the unconventional museum amd the challenges of the…