04/01/07 Glacial Lake Helena
04/03/07 Contrail Votices
04/04/07 Alpenglow in the German Alps
04/05/07 Diamond Dust Dogs at Halley Station
04/06/07 Kernville Crepuscular Rays
04/07/07 Portao, Brazil Halo
04/08/07 Austin Solar Corona
04/09/07 Costa Rica Volcanoes
04/10/07 Spheres of Costa Rica
04/11/07 Devonian Shale in Upstate New York
04/12/07 Lake Vanda in Antarctica
04/13/07 Mauna Kea Light Scattering
04/15/07 Chimney Shadow and Frost
04/16/07 Snow Stripes
04/17/07 Gravity Driven Snow Roller
04/18/07 Chicago River Ice Transformation
04/19/07 Horizons from On High and Low
04/20/07 Great Circle Scenes
04/21/07 Tornado in Egypt
04/22/07 Waterspout on Sebago Lake, Maine
04/23/07 Gas Light Pillar
04/24/07 Lone Pine Lenticular
04/25/07 Black Hills Above the Clouds
04/26/07 Boreal Forest Rings
04/27/07 Horsehead Nebula
04/28/07 Geminid Meteor Train
04/29/07 Lunar Corona Over the Chesapeake Bay
04/30/07 Waterpocket Fold