Ashley Cooper / Life jackets and remains of boats left by Syrian migrants, refugees fleeing the war. Lesvos Island, Efthalou, Greece. September.

Ashley Cooper / Syrian migrants, refugees fleeing the war, Lesvos Island, Greece. September 2015.

Ashley Cooper / Life jackets and remains of boats left by Syrian migrants, refugees fleeing the war. Lesvos Island, Efthalou, Greece. September.

Gerrit Vyn / Shellfish harvesters on the mudflats at Rudong, China. Besides being important to human livelihoods these mudflats are the last remaining place in the Yellow Sea where the critically endangered Spoon-...

Cyril Ruoso / Barn Swallow (Hirunda rustica) researcher Pierfrancesco Micheloni collecting migrating individuals for banding, Ebakken, Nigeria

Cyril Ruoso / Barn Swallow (Hirundo rustica) pair caught in mist net set by researchers who tag, weigh and measure the birds and release them the next morning before sunrise, Poitou, France

Cyril Ruoso / Barn Swallow (Hirundo rustica) migratory flock perching on telephone wire, Poitou, France

Jabruson / African rainforest penetration and associated pressures. People on truck with water containers. Influx of humans exerts pressure on wildlife and natural resources outside and within protected areas th...

Jabruson / African rainforest penetration and associated pressures. People on truck with water containers. Influx of humans exerts pressure on wildlife and natural resources outside and within protected areas th...

Jabruson / Vehicles stuck in deep mud - the onset of the rainy season deteriorates dirt roads making transport difficult, Cameroon, August 2009.

Jabruson / Vehicles stuck in deep mud - the onset of the rainy season deteriorates dirt roads making transport difficult, Cameroon, August 2009.

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) being counted and measured by fisheries workers, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada