 Green frog in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
 Sitting butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Small butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
 Black and red striped butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
 Honey bees in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
 Pink spotted swallowtail(?) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
 Fish on a wall of fish tank in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
 Speckled butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Butterfly head in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Close-up of a black and red butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Black and red butterfly on a leaf in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Black and red striped butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Black and orange butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Flying Dutchman butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Red Peacock Butterfly (Anartia amathea) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Butterfly on a flower of tropical milkweed in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Close-up of a feeding Owl Butterfly (Caligo) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Black butterfly with white stripes in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Orange butterfly Dryadula Phaetusa(?) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Close-up of Dryadula Phaetusa(?) butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Close-up of Red Peacock Butterfly (Anartia amathea) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Butterfly on pink Pentas lanceolata flowers in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Rice Paper Butterfly (Idea leuconoe) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Owl Butterfly (Caligo) feeding on a rotten star fruit in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Butterfly on Pentas lanceolata (Penta starla) flowers in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Owl Butterfly (Caligo) with dramatic eyespots on the underside of the lower wing in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Caterpillar on a leaf in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Emerald Swallowtail (Papilio Palinurus) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Close-up of Emerald Swallowtail (Papilio Palinurus) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Blue Wave Butterfly (Myscelia cyaniris) with bands of iridescent blue across the upper wing surface in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Blue flower of Lignum Vitae (Gaiac tree, Guaiacum sanctum) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
 Orange moth on display in Houston Museum of Natural Science. Houston, Texas, January 22, 2011
 Clouded Yellow butterfly (Colias croceus) sitting on flowers of radish (Raphanus sativus, local names ruweid, fijil) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
 Green frog in Houston Zoo. Houston, Texas, December 23, 2009
 Black-veined white butterfly (Aporia crataegi) sitting on a flower of scabious in Posiolok, 45 miles south from Saint Petersburg. Russia, June 23, 2011
 Green tree frog in Rainforest Pyramid of Moody Gardens. Galveston, Texas, January 19, 2013
 Sitting frog near Lisiy Nos, south from Saint Petersburg. Russia, August 17, 2018
 Large flock of sparrows sitting on a bush near Green Circles (center-pivot irrigation) in Irkhaya Farms. South-western Qatar, March 29, 2014
 Current Mission Control Center in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Historic Mission Control Center in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Apparatus in current Mission Control Center in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Visitor s walk in current Mission Control Center in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Mysterious buttons in Historic Mission Control Center in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Close-up of a little green frog on Devil s Walking Stick on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Lower view of a little green frog on Devil s Walking Stick on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Little green frog on a leaf base of Devil s Walking Stick on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Close-up of a little green frog on a leaf base of Devil s Walking Stick on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Side view of a little green frog on a thorny stem of Devil s Walking Stick on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Little green frog on a thorny stem of Devil s Walking Stick (Hercules-club, Aralia spinosa) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Brown pelican sitting on rocks below Pier 21. Galveston, Texas, January 1, 2011
 Blue Pansy (Junonia orithya) butterfly on a field on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, April 10, 2015
 Blue Pansy (Junonia orithya) butterfly on a field on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, October 9, 2015
 Brown pelican sitting on rocks at morning near Pier 21. Galveston, Texas, January 1, 2011
 Blue Pansy (Junonia orithya) butterfly on flowers of Reichardia intermedia on a field on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, April 10, 2015
 Flowers and green fruits of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 People from QNHG (Qatar Natural History Group) taking pictures of a lizard on periphery of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, March 5, 2016
 Group of birdwatchers from QNHG (Qatar Natural History Group) looking for a white owl near Green Circles (center-pivot irrigation) in Irkhaya Farms. South-western Qatar, March 29, 2014
 Group of bird watchers from QNHG (Qatar Natural History Group) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, March 5, 2016
 Clouded Yellow butterfly (Colias croceus) on flowers of radish (Raphanus sativus, local names ruweid, fijil) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
 Clouded Yellow butterfly (Colias croceus) on a flower of radish (Raphanus sativus, local names ruweid, fijil) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
 Group of bird watchers from QNHG (Qatar Natural History Group) near a pond outside of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, March 5, 2016
 View of the fountain of Christian Science Center from an observatory of Prudential Tower in Boston, August 2, 1999.
 Soft green-eyes (Berlandiera pumila) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, October 19, 2024
 Back lit Clouded Yellow butterfly (Colias croceus) on flowers of radish (Raphanus sativus, local names ruweid, fijil) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
 Junk rocket in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Kids Place in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Installations Color and Science in Erarta Museum of Contemporary Art. Saint Petersburg, Russia, May 6, 2021
 Wires of Saturn Rocket in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Engine of Saturn rocket in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Guts of Saturn Rocket in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Green lynx spider preying on a skipper butterfly on Purple dewdrop (Lobelia puberula) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
 Tubes and wires of Saturn Rocket in NASA Space Center Museum. Houston, Texas, February 16, 2008
 Close up of a green lynx spider preying on a skipper butterfly on Purple dewdrop (Lobelia puberula) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
 A frog in Menkovo, south from Saint Petersburg. Russia, June 1, 2011
 Green lynx spider preying on a skipper butterfly on Purple dewdrop (downy lobelia, Lobelia puberula) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
 Ants eating a frog near Toksovo, 10 miles north from Saint Petersburg. Russia, June 11, 2011
 Sitting black-veined white butterfly (Aporia crataegi, Russian name Boyaryshnitsa) east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Green lynx spider with immobilized prey, Gulf Fritillary (Agraulis vanillae) butterfly, on a flower of narrow-leaf gayfeather (Liatris mucronata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Huntsville, Texas, September 14, 2008
 Saturn Rocket in junk rocket park of NASA Space Center Museum. Houston, Texas, February 16, 2008
 Various weeds on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Frog s head on Four Notch Loop Trail in Sam Houston National Forest. Huntsville, Texas, May 11, 2008
 Water pipes on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Green funeral coach in National Museum of Funeral History. Houston, Texas, February 8, 2009
 Green lynx spider (Peucetia viridans) injecting paralyzing venom into the body of Gulf Fritillary (Agraulis vanillae) butterfly on liatris (narrow-leaf gayfeather) flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Huntsville, Texas, September 14, 2008
 Blooming Reichardia intermedia on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Sitting pioneer white butterfly (brown-veined white, Belenois aurota) in Rawdat Al Faras Research Station (RAFRS) near Al Zubara Road. Qatar, April 29, 2016
 Two sitting pioneer white butterfly (brown-veined white, Belenois aurota) in Rawdat Al Faras Research Station (RAFRS) near Al Zubara Road. Qatar, April 29, 2016
 Close up of a flower of Reichardia intermedia on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Argentine peppercress (Lepidium bonariense) on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Accumulation of sitting pioneer white butterfly (brown-veined white, Belenois aurota) in Rawdat Al Faras Research Station (RAFRS) near Al Zubara Road. Qatar, April 29, 2016
 Leaves of smooth sow thistle (Sonchus oleraceus) on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Seeds of Argentine peppercress (Lepidium bonariense) on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Fruits of Argentine peppercress (Lepidium bonariense) on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Fruits of smooth sow thistle (Sonchus oleraceus) on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Flowers of Prickly Dock (Emex spinosa) on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 Various weeds on Green Circles (center-pivot irrigation) in Irkhaya Farms, with staggerweed (Stachys arvensis) in foreground. Qatar, January 16, 2015
 Green brittlegill mushrooms Russula subgraminicolor with yellow center on floodplain on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
 Flowers and seeds of Argentine peppercress (Lepidium bonariense) on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
 African bristlegrass (Setaria sphacelata) with long spikelets on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
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