Toronto sculptor Harley Valentine has spent the past few months finding, and then casting, a seven-foot, 100-year-old narwhal tusk in bronze. The result is a sculpture he cheekily calls North Pole. The tusk is actually a super-sensitive tooth—a “mammalian weather station,” says Valentine—that enables the narwhal, a medium-sized whale, to detect changes in temperature, air … Continue reading Artist Harley Valentine Casts Natural Wonder