Week 4 December 2012: Cerebellum

Week 3 December 2012: Packed Neurons

Week 2 December 2012: Pyramidal Neurons

Week 1 December 2012: Dentate Gyrus

Week 4 November 2012: Aurora, Moon

Week 3 November 2012: Quito, Ecuador

Week 2 November 2012: Paris

Week 1 November 2012: Ngorongoro Crater, Tanzania

Week 4 October 2012: Guatemala

Week 3 October 2012: Iceland

Week 2 October 2012: Bíldudalur, Westfjords, Iceland

Week 1 October 2012: Aurora from Airplane Window

Week 4 September 2012: Sunset in Iceland

Week 3 September 2012: 66 Degrees North

Week 2 September 2012: Ghana

Week 1 September 2012: Skogafoss, Iceland

Week 4 August 2012: Looking up into the Aurora

Week 3 August 2012: In the Shadow of a Volcano, Guatemala

Week 2 August 2012: Star Trails in Maine

Week 1 August 2012: Land of a Thousand Hills, Rwanda

Week 4 July 2012: Colorful Cultivation, Rwanda

Week 3 July 2012: Tea Picker, Rwanda

Week 2 July 2012: Big Sur, California

Week 1 July 2012: Wildfires over Utah

Week 4 June 2012: San Francisco Sunset

Week 3 June 2012: Lunar Eclipse

Week 2 June 2012: Sunrise in Kerala, India

Week 1 June 2012: Lava, Moon, Stars on the Big Island

Week 4 May 2012: Ghana

Week 3 May 2012: Anak Krakatau Volcano

Week 2 May 2012: Lake Atitlán, Guatemala

Week 1 May 2012: Moon over Stromboli Volcano, Italy

Week 4 April 2012: Rwanda

Week 3 April 2012: Maasai Mara, Kenya

Week 2 April 2012: Star Trails from Mauna Kea

Week 1 April 2012: Te Anau, New Zealand

Week 4 March 2012: Skogafoss, Iceland

Week 3 March 2012: Aurora from Airplane Window

Week 2 March 2012: Pacific Ocean

Week 1 March 2012: The Milky Way

Week 4 February 2012: Northern Iceland Aurora

Week 3 February 2012: Atlantis Lift-Off

Week 2 February 2012: Golden Gate Bridge

Week 1 February 2012: Central Australia

Week 4 January 2012: Mauna Kea Stars

Week 3 January 2012: Gorilla in the Wild, Rwanda

Week 2 January 2012: Sunrise Shadow Cast by Mauna Kea

Week 1 January 2012: Volcano National Park, Hawaii