What do gardens, libraries and exploring have in common?

Tree like a cathedral, with flying buttress sort of trunks. Huge canopy of leaves and the trunks more than twice the height of a person.

Planting a tree in Palermo a few hundred years ago means a gigantic tree is still living today. A botanical garden is a living library and so is a zoo, an art museum, or a national park. These storehouses of genetic variability are important because today’s shortcoming may be the key to success in another […]