While living in Australia in 2010, I heard a good deal about the Sea Shepherd Conservation Society — a group of marine-wildlife activists who were going up against Japanese whaling ships in the Antarctic seas (www.seashepherd.org). They made the news night after night, and the U.S. cable-television channel Animal Planet was filming a series called Whale Wars about the group’s activities. The wind-whipped people on my TV screen looked cold, strong, and resolute as they deliberately went in harm’s way to save whales. I’d sit on the couch eating dinner and cheer them on, wondering if I could ever be so brave.