Pete Oxford / Precious Metal Scarab (Plusiotus sp) on leaf, Manu cloud forest, Peru

Pete Oxford / Lepidopteron caterpillar, cloud forest, Peru

Pete Oxford / Velvet-purple Coronet (Boissonneaua jardini) hummingbird, feeding at flower while flying, cloud forest ecosystem, west slope of the Andes Mountains, Ecuador

Pete Oxford / Booted Racket-tail (Ocreatus underwoodii) hummingbird, feeding at flower in cloud forest, west slope of the Andes, Ecuador

Colin Monteath / Wind cloud over the summit of K2, second highest peak in the world towering over the Godwin Austen Glacier in the spring, Karakoram Mountains, Pakistan

Colin Monteath / Dawn over the Kaikoura Coastline and seaward Kaikoura Mountains, South Island, New Zealand

Colin Monteath / Two skiers pulling sleds under Mitre Peak, Godwin Austen Glacier, Karakoram Mountains, Pakistan

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) about to alight on Lantana flowers, note proboscis, cloud forest, Costa Rica

Michael & Patricia Fogden / Bee (Eulaema sp) visiting Orchid (Stanhopea wardii) note pollinaria on bee, cloud forest, Costa Rica

Michael & Patricia Fogden / Bee (Eulaema sp) visiting Orchid (Stanhopea wardii) note pollinaria on bee, cloud forest, Costa Rica

Michael & Patricia Fogden / Fire-bellied Snake (Leimadophis epinephalus) harmless mimic of coral snake, defensive display, cloud forest, Costa Rica

Michael & Patricia Fogden / Black-crested Coquette (Lophornis helenae) hummingbird female feeding at and pollinating Porterweed (Stachytarpheta sp) flowers, Penas Blancas Valley, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Black-crested Coquette (Lophornis helenae) hummingbird male feeding at and pollinating Porterweed (Stachytarpheta sp) flowers, Penas Blancas Valley, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding at and pollinating flowers of epiphytic Heath (Satyria warszewiczii), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding at and pollinating flowers of epiphytic Heath (Gonocalyx costaricensis), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding at and pollinating flowers of epiphytic Orchid (Elleanthus glaucophyllus), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Hermit (Phaethornis guy) hummingbird female feeding chicks at nest, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Fork-tailed Emerald (Chlorostilbon canivetii) hummingbird perched and spreading wings, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Underwood's Long-tongued Bat (Hylonycteris underwoodi) flying to Mucuna flowers in the cloud forest at night, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) breeding aggregation, extinct, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding on Cappel (Palicourea lasiorhachis) flowers, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Stripe-tailed Hummingbird (Eupherusa eximia) male piercing Jacobina flowers (Justicia aurea) in cloud forest, Costa Rica

Michael & Patricia Fogden / Scintillant Hummingbird (Selasphorus scintilla) feeding and pollinating flowers of epiphytic Heath (Vaccinium poasanum) cloud forest, Costa Rica

Michael & Patricia Fogden / Scintillant Hummingbird (Selasphorus scintilla) feeding and pollinating Madder (Gonzalagunia rosea) flowers, cloud forest, Costa Rica

Michael & Patricia Fogden / Magenta-throated Woodstar (Calliphlox bryantae) hummingbird male feeding at and pollinating Poinsettia (Euphorbia pulcherrima) flowers while defecating, cloud forest, Costa Rica

Michael & Patricia Fogden / Magenta-throated Woodstar (Calliphlox bryantae) hummingbird male flying near Latin American Lady Orchid (Stenorrhynchos speciosum) cloud forest, Costa Rica

Michael & Patricia Fogden / Magenta-throated Woodstar (Calliphlox bryantae) hummingbird male flying near Latin American Lady Orchid (Stenorrhynchos speciosum) cloud forest, Costa Rica

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird, male, endemic, cloud forest, Costa Rica

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird, male feeding at and pollinating flowers (Holtlips cephaelis elata) cloud forest, Costa Rica

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird, male feeding on and pollinating Heath (Satyria warszewiczii) flowers, in cloud forest, Costa Rica

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird, male feeding on and pollinating Heath (Satyria warszewiczii) flowers, in cloud forest, Costa Rica

Colin Monteath / Skiers approaching the base of K2, second highest peak in the world across the Godwin Austen Glacier in the Spring, Karakoram Mountains, Pakistan

Nick Groves / Mt Farrar (2,433 meters) above the Garden of Eden, evening, Southern Alps, New Zealand

Tom Vezo / Lightning strike over desert, Santa Rita Mountains, Arizona

Michael & Patricia Fogden / Pygmy Marsupial Frog (Flectonotus pygmaeus) female releasing tadpoles into water pooled in bromeliad, cloud forest, Venezuela

Pete Oxford / Cloud Forest Tree Frog (Hyla pellucens) camouflaged on leaf, Mindo cloud forest, Ecuador

Michael & Patricia Fogden / Fork-tailed Emerald (Chlorostilbon canivetii) hummingbird feeding at and pollinating Gesneria (Kohleria spicata) flowers, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Magenta-throated Woodstar (Calliphlox bryantae) hummingbird male feeding at and pollinating epiphytic Heath (Cavendishia complectens), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding at and pollinating epiphytic Heath (Macleania insignis), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird flying in rainforest during rain, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) spawning pair, with female's eggs in water, extinct, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) male breeding aggregation, extinct, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) males and single female form breeding aggregation, extinct, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) males, breeding aggregation, extinct, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) males, breeding aggregation, extinct, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Golden Toad (Bufo periglenes) pair mating, Monteverde Cloud Forest Reserve, Costa Rica

Colin Monteath / Trango Peaks, 6,286 meters elevation, and clearing storm at dawn above Baltoro Glacier, Karakoram Mountains, Pakistan

Colin Monteath / Trekker on Baltoro Glacier at dawn admiring cathedral spires, 5,866 meters elevation, Karakoram Mountains, Pakistan

Colin Monteath / Storm engulfing K2 an 8,611 meter tall peak above Godwin Austen Glacier, Karakoram Mountains, Pakistan

Michael & Patricia Fogden / Starfish Stinkhorn (Aseroe rubra) with Blue Bottle Fly (Calliphoridae) group feeding on and dispersing spores, cloud forest, Costa Rica

Konrad Wothe / Lemur Frog (Phyllomedusa lemur) top view of frog on leaf with back leg stretched out, Monteverde Cloud Forest Reserve, Costa Rica

Tui De Roy / Andean Cock-of-the-rock (Rupicola peruvianus) female and chicks in nest on ravine wall, Pichincha Volcano slope, Choco Darien cloud forest, Andes Mountains, Ecuador

Jim Brandenburg / Grass at waters edge and clouds reflecting in water, Boundary Waters Canoe Area Wilderness, Minnesota

Norbert Wu / Aerial view of ocean and clouds, Great Barrier Reef, Australia

Jim Brandenburg / Hazy view to the west across the Sierra Nevada foothills from Kings Canyon National Park, California

Tui De Roy / Magnificent Frigatebird (Fregata magnificens) soaring high to scan the horizon for scavenging opportunities, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group and Galapagos Hawk (Buteo galapagoensis) on rim of cloud filled caldera at sunrise, Alcedo Volcano, Isabella Island, Galapagos Islan...

Tui De Roy / Ichu Grass (Stipa ichu) and Huamanpinta (Chuquiraga spinosa) dominate the high Andean Plateau above 4,000 meters elevation in Paramo habitat with heavy weather rolling in, Cotopaxi National Park, Ecua...

Tui De Roy / Laguna Canapa, Potosi District, altiplano, Bolivia

Mark Moffett / Nalini Nadkarni scrapes soil from tree trunk in Monteverde Cloud Forest Reserve, Costa Rica

Tui De Roy / Buff-tailed Coronet (Boissonneaua flavescens) hummingbird at a bromeliad in cloud forest on west slope of Pichincha Volcano, Choco Darien region, Andes Mountains, Ecuador

Tui De Roy / Violet-tailed Sylph (Aglaiocercus coelestis) hummingbird male perching on branch in cloud forest at 1, 500 meters elevation on western slope of Pichincha Volcano, lower Tandayapa Valley, Choco Darien...

Tui De Roy / Buff-winged Starfrontlet (Coeligena lutetiae) hummingbird flying in cloud forest, west slope, Pichincha Volcano, over 3, 000 meters elevation, Choco Darien region, Andes Mountains, Ecuador

Tui De Roy / Bromeliads in Andean cloud forest at 1,500 to 2,500 meters elevation on the western slope, Pichincha Volcano, Choco-Darien Ecoregion, Ecuador

Tui De Roy / Cascade and dense vegetation in Andean cloud forest at 1,500 to 2,500 meters elevation on the western slope of Pichincha Volcano, Choco-Darien Ecoregion, Ecuador

Tui De Roy / Cascade and dense vegetation in Andean cloud forest at 1,500 to 2,500 meters elevation on the western slope, Pichincha Volcano, Choco-Darien Ecoregion, Ecuador

Mark Moffett / Researchers Faye Hadley and Stephanie Bohlmen climbing seven-story tall Strangler Fig tree shell, Monteverde, Costa Rica

Colin Monteath / Cordillera Raura peaks and high alpine lakes, Cordillera Huayhuash, Andes, Peru

Colin Monteath / High cloud panorama over Matukituki Valley from Rocky Hill above Diamond Lake and Mount Aspiring near Wanaka, Otago, New Zealand

Piotr Naskrecki / Cloud forest, Muller Range, Papua New Guinea

Colin Monteath / High clouds from Jumped Up Downs hill on Erewhon Station looking across Rangitata river valley, Canterbury, New Zealand

Aflo / Y-9101 High and low lieing cloud around mountain peaks

Colin Monteath / Storm at dawn covering Cerro Torre, Los Glaciares National Park, Patagonia, Argentina

Michael & Patricia Fogden / Cloud forest, from the sky walk, private reserve with canopy walk, Costa Rica

Pete Oxford / Broad-snouted Caiman (Caiman latirostris) floating in calm waters, South America

Tim Fitzharris / Clouds reflected in water at Cottonwood Pass, Rocky Mountains, Colorado

Michael & Patricia Fogden / Scintillant Hummingbird (Selasphorus scintilla) feeding and pollinating flowers, epiphytic Heath (Vaccinium poasanum) cloud forest, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding on and pollinating small epiphytic Pugabaca Pacuru flowers (Ravnia triflora) cloud forest, Costa Rica

Michael & Patricia Fogden / Violet Sabre-wing (Campylopterus hemileucurus) hummingbird feeding on and pollinating Desconocido (Razisea spicata) flowers, cloud forest, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird male feeding on bracts of Angiosperm (Schwartziaácostaricensis), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green-crowned Brilliant (Heliodoxa jacula) hummingbird male feeding and pollinating epiphytic Bromeliad (Pitcairnia brittoniana) cloud forest, Costa Rica

Michael & Patricia Fogden / Green-crowned Brilliant (Heliodoxa jacula) hummingbird male feeding and pollinating epiphytic Bromeliad (Pitcairnia brittoniana) cloud forest, Costa Rica

Michael & Patricia Fogden / Green Hermit (Phaethornis guy) hummingbird feeding on and pollinating Desconocido (Razisea spicata) flowers, in cloud forest, Costa Rica

Michael & Patricia Fogden / Green Hermit (Phaethornis guy) hummingbird feeding on and pollinating Desconocido flowers (Razisea spicata) in cloud forest, Costa Rica

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird, male feeding and pollinating flowers of epiphytic Heath (Cavendishia capitulata) cloud forest, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding on nectar of flowers (Satyria warszewiczii), Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird flying near Heath Cavendish (Cavendishia sp) flowers, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green Hermit (Phaethornis guy) hummingbird feeding on and pollinating Coral Tree (Erythrina sp) flowers, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Green-crowned Brilliant (Heliodoxa jacula) hummingbird male, cloud forest, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding on and pollinating epiphytic Heath (Cavendishia capitulata) cloud forest, Costa Rica

Michael & Patricia Fogden / Green Violet-ear (Colibri thalassinus) hummingbird feeding on nectar from Roseleaf Sage (Salvia involucrata) flowers, Monteverde Cloud Forest Reserve, Costa Rica

Michael & Patricia Fogden / Sunset with people in canoe, Laguna Zancudo Cocha, Ecuador

Michael & Patricia Fogden / Coppery-headed Emerald (Elvira cupreiceps) hummingbird, male flying near Heath (Satyria warszewiczii) flowers, in cloud forest, Costa Rica

Colin Monteath / Angel Peak beside K2, second highest peak in the world towering above Godwin Austen Glacier, Karakoram Mountains, Pakistan

Colin Monteath / Cathedral Peaks at 5,866 meters elevation at dawn above Baltoro Glacier, Karakoram Mountains, Pakistan

Jim Brandenburg / Cloud seeding equipment on wing of plane viewed through window flying over North Dakota