This chance encounter in the basement of the Natural History Museum of Los Angeles County sparked Troll’s obsession with Helicoprion, a mysterious monster from deep time.In 2010, tattooed undergraduate student and returning Iraq War veteran Jesse Pruitt became seriously smitten with a Helicoprion fossil in a museum basement in Idaho. These two bizarre-shark disciples found each other, and an unconventional band of collaborators grew serendipitously around them, determined to solve the puzzle of the mysterious tooth whorl once and for all.Helicoprion was a Paleozoic chondrichthyan about the size of a modern great white shark, with a circular saw of teeth centered in its lower jaw—a feature unseen in the shark world before or since. For some ten million years, long before the Age of Dinosaurs, Helicoprion patrolled the shallow seas around the supercontinent Pangaea as the apex predator of its time.Just a few tumultuous years after Pruitt and Troll met, imagination, passion, scientific process, and state-of-the-art technology merged into an unstoppable force that reanimated the remarkable creature—and made important new discoveries.In this groundbreaking book, Susan Ewing reveals these revolutionary insights into what Helicoprion looked like and how the tooth whorl functioned—pushing this dazzling and awe-inspiring beast into the spotlight of modern science.

    She documents the unbuttoning of the earth and the rebirth of the garden, the rewilding of a tiny urban space. On her own she unscrews, saws, and hammers the decking away, she clears the builders' rubble and rubbish beneath it, and she digs and enriches the soil, gradually planting it up with plants she knows will attract wildlife. She erects bird boxes and bee hotels, hangs feeders and grows nectar- and pollen-rich plants, and slowly brings life back to the garden.But while she's doing this her neighbors continue to pave and deck their gardens. The wildlife she tries to save is further threatened, and she feels she's fighting an uphill battle. Is there any point in gardening for wildlife when everyone else is drowning the land in poison and cement?Throughout her story, Kate draws on an eclectic and eccentric cast of friends and colleagues, who donate plants and a greenhouse, tolerate her gawping at butterflies at Gay Pride, and accompany her on trips to visit rare bumblebees and nightingales.

    Sir Douglas Mawson is remembered as the young Australian who would not go to the South Pole with Robert Scott in 1911, choosing instead to lead his own expedition on the less glamorous mission of charting nearly 1,500 miles of Antarctic coastline and claiming its resources for the British Crown. His party of three set out through the mountains across glaciers in 60-mile-per-hour winds. Six weeks and 320 miles out, one man fell into a crevasse, along with the tent, most of the equipment, all of the dogs' food, and all except a week's supply of the men's provisions.Mawson's Will is the unforgettable story of one man's ingenious practicality and unbreakable spirit and how he continued his meticulous scientific observations even in the face of death. When the expedition was over, Mawson had added more territory to the Antarctic map than anyone else of his time. Thanks to Bickel's moving account, Mawson can be remembered for the vision and dedication that make him one of the world's great explorers.