John Cancalosi / Fossil ammonite {Placenticeras sp} 70m-years- old Bear's paw formation Canad

Eric Baccega / Lighthouse in the fog, Cap des Rosiers, Gaspesie, Quebec, Canad

Staffan Widstrand / Bylot island, Baffin islands, melting sea ice in spring, Canad

Terry Andrewartha / Tundra buggies at Snow Goose camp, Churchill, Manitoba, Canad

Eric Baccega / Coastal erosion of rocks, Ile Quarry, Mingan Is, Quebec, Canad

NEIL NIGHTINGALE / Close-up of lichens on rock. Ellesmere, Canad

DOC WHITE / Bowhead whale {Balaena mysticetus} Baffin Island Canad