We are changing the face of the sky. And we are altering its mood; scientists hesitate to link specific storms to global warming, but it’s clear that, on the whole, climate change is making extreme-weather events more powerful and, perhaps, more common. When we look up, increasingly the face we see is ours. In the photographer Camille Seaman’s cloudscapes, it’s difficult to not also see humankind’s self-portrait: potent, defiant, unforgiving. Clouds always tell a true story, Ralph Abercromby said, and more than ever the story they tell is the story of ourselves.