February 04 2012

Australia, Canada, France, United Kingdom

Two males fight Hippo in Kruger National Park,South Africa

(© Nigel Dennis/Gallo Images/Getty Images)

Germany

Heads of stone statues at Mount Nemrut in Turkey

(© Manfred Mehlig/Corbis)

New Zealand, United States 

Licmophora flabellata, a type of sessile diatom, at a magnification of 100

(© Wim van Egmond /Corbis)

 China

Stromatolites at dawn in Shark Bay,Australia

(© Frans Lanting/Corbis)

 Japan

 

 Waterfall in Silver Falls State Park,Oregon,US

(© Craig Tuttle/Corbis)