Sea Stewards

In a pair of new books, on coral reefs and sperm whales, two impassioned ocean lovers offer contrasting visions of how to safeguard its splendors.

The Waymaker

Andy Strauss has spent 25 years preserving land and creating trails to restore natural beauty to blighted landscapes. Now he has a vision for the hardscrabble coal country of northeastern Pennsylvania.

The Park of a Thousand Pieces

Penn Praxis has a plan for adding 500 acres of open green space to Philadelphia in the next four years. Their approach, informed by novel research by Penn scholars in areas ranging from real-estate economics to criminology, is a new way of imagining urban parkland.