Luke Massey / Giant otter (Pteronura brasiliensis) feeding on a catfish (Loricariidae) with Cocoi heron (Ardea cocoi) scavenging remnants, Rio Cuiaba, Brazil

Bernard Castelein / Remnants of old military railway, Klein Schietveld, Brasschaat, Belgium, July 2013.

Jabruson / African elephant (Loxodonta africana) two youngsters 'Mecca' and 'Lungunia' being fed mangos by their keeper, Garamba National Park, North Eastern Zaire, now the Democratic Republic of Congo. Remnants...

Milan Radisics / Aerial tracking shot looking down on the melting remnants of the collapsing Svinafellsjokull glacier and melt lake, Iceland, August 2018.

David Pattyn / Remains from avalanches after the snow has melted with broken trees and masses of rocky debris remaining, Valsavarenche, Gran Paradiso National Park, Aosta Valley, Italy

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), recently hatched chick and eggshell remnants on father's feet. Atka Bay, Antarctica. August.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), recently hatched chick and eggshell remnants on father's feet. Atka Bay, Antarctica. August.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), recently hatched chick and eggshell remnants on father's feet. Atka Bay, Antarctica. August.

Luke Massey / Giant otter (Pteronura brasiliensis) feeding on a catfish (Loricariidae) with Cocoi heron (Ardea cocoi) scavenging remnants, Rio Cuiaba, Pantanal, Brazil.

Luke Massey / Giant otter (Pteronura brasiliensis) feeding on a catfish (Loricariidae) with Cocoi heron (Ardea cocoi) scavenging remnants, Rio Cuiaba, Pantanal, Brazil.

Olga Kamenskaya / Aeial view of landscape with last remnants of snow in summer, Nenets Autonomous Okrug, Arctic, Russia , July 2017

Olga Kamenskaya / Aeial view of landscape with last remnants of snow in summer, Nenets Autonomous Okrug, Arctic, Russia, July 2017