Ice Rivers is a remarkable book. For those of us who have had the privilege of scrambling across glaciers around the world, this work will bring back sharp memories of their otherworldly beauty. For those who haven't, this is the perfect introduction into a crucial and vanishing part of our planet. Jemma Wadham works to understand, to bear witness, and to protect - it's hard to imagine a more fully human undertaking Bill McKibben, author of The End of Nature