Capturing multiple events in a single frame is complicated. This is why many magazines over the decades have stuck with the obvious ‘before and after’ shots of two images side by side to convey change.

Photographing natural resource degradation is very difficult. As an environmental researcher and avid photographer, I wrestle with this. How do I encapsulate over-fishing; deforestation; aggressive commercial farming; ocean acidification; or water pollution in just one shot?

Many photographers shoot environmental change with shock factor images: starving animals; barren, drought-ridden lands beside lush forest; and of course the classic image of a distraught polar bear disoriented upon melting ice.

The accuracy of photography is one great tool to raise environmental awareness, especially with the tool of ‘before and after’ complementary images.

Other masters, such as Sebastião Salgado, offer stunning visuals into the consequences of humanity’s insatiable greed. While I’m not a fan of Salgado’s over-processing and heavy shadows, he successfully raises the environmental consciousness of huge numbers of people. Yann Arthus-Bertrand’s aerial photographs of Earth have also been an enormous hit,first touring the world and then being produced by Luc Besson into feature film, Home.

Another series of powerful climate change photographs are Daesung Lee’s, who contrasted contemporary landscapes with old photographs to highlight the drought and desertification that has plagued Mongolia, especially its nomadic peoples. Lee placed printed billboards of a lusher, greener countryside and placed them in the current, barren landscape with actual people with their livestock, the snapshots (sectioned off with velvet ropes) bear resemblance to a museum exhibit).