04/01/12 Lunar X
04/03/12 Karst and Karrens in Albania
04/04/12 Unconformity Near Assynt, Scotland
04/05/12 Comet Garradd in 3-D
04/09/12 Bubble Columns in River Ice
04/10/12 Sugar Shack
04/11/12 Fog Over the River Tagus of Portugal
04/12/12 Lake Effect Snow Clouds
04/13/12 Glaciating Cirrus Clouds
04/14/12 Preserving Dark Skies
04/16/12 Fiery Sunset Over Cadiz, Spain
04/17/12 Cascades Volcanoes in Oregon
04/18/12 Discovery’s Final Mission
04/19/12 Old Moon and the Sea
04/20/12 2012 Eruption of Mount Etna
04/21/12 Scots Pines in Central Spain
04/22/12 Lagoon and Trifid Nebulas
04/24/12 Cold Front at Sea
04/25/12 Microburst in Northern Illinois
04/26/12 Giant's Causeway
04/28/12 Prutas Peak, Montenegro
04/29/12 Lightning Tree
04/30/12 Keogram of Mt. Snezka