USA images - Joel Sartore

Photo: Aplomado falcon (Falco femoralis pichinchae) a federally-listed species, at the Milford Nature Center.

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Aplomado falcon (Falco femoralis pichinchae) a federally-listed species, at the Milford Nature Center.

Photo: Aplomado falcon (Falco femoralis pichinchae) a federally-listed species, at the Milford Nature Center.

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Aplomado falcon (Falco femoralis pichinchae) a federally-listed species, at the Milford Nature Center.

Photo: For the first time in decades, wolves again chase elk through the Lamar Valley of Yellowstone.

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For the first time in decades, wolves again chase elk through the Lamar Valley of Yellowstone. The reintroduction of wolves has been a great success, drawing a new generation of visitors to the park.

Photo: Damselfly larvae (Coenagrionidae argia) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Damselfly larvae (Coenagrionidae argia) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Damselfly larvae (Coenagrionidae argia) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Damselfly larvae (Coenagrionidae argia) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Devils Hole warm spring riffle beetle (Stenelmis calida calida) at Ash Meadows National Wildlife Refuge in NV.

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Devils Hole warm spring riffle beetle (Stenelmis calida calida) at Ash Meadows National Wildlife Refuge in NV.

Photo: Ash Meadows naucorid beetles (Ambrysus amargosus) at Ash Meadows National Wildlife Refuge in NV. This species is federally threatened.

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Ash Meadows naucorid beetles (Ambrysus amargosus) at Ash Meadows National Wildlife Refuge in NV. This species is federally threatened.

Photo: Ash Meadows naucorid beetles (Ambrysus amargosus) at Ash Meadows National Wildlife Refuge in NV. This species is federally threatened.

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Ash Meadows naucorid beetles (Ambrysus amargosus) at Ash Meadows National Wildlife Refuge in NV. This species is federally threatened.

Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN's red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

Photo: Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN's red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

Photo: Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN's red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

Photo: Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN's red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

Photo: Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN's red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

Photo: Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

Photo: Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

Photo: Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

Photo: Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

Photo: Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

Photo: A HillisÕs dwarf salamander (Eurycea hillisi) at the Auburn University Natural History Museum.

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A HillisÕs dwarf salamander (Eurycea hillisi) at the Auburn University Natural History Museum.

Photo: A HillisÕs dwarf salamander (Eurycea hillisi) at the Auburn University Natural History Museum.

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A HillisÕs dwarf salamander (Eurycea hillisi) at the Auburn University Natural History Museum.

Photo: A spotted dusky salamander (Desmognathus conanti) at the Auburn University Natural History Museum.

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A spotted dusky salamander (Desmognathus conanti) at the Auburn University Natural History Museum.

Photo: A spotted dusky salamander (Desmognathus conanti) at the Auburn University Natural History Museum.

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A spotted dusky salamander (Desmognathus conanti) at the Auburn University Natural History Museum.

Photo: A WebsterÕs salamander (Plethodon websteri) at the Auburn University Natural History Museum.

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A WebsterÕs salamander (Plethodon websteri) at the Auburn University Natural History Museum.

Photo: A WebsterÕs salamander (Plethodon websteri) at the Auburn University Natural History Museum.

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A WebsterÕs salamander (Plethodon websteri) at the Auburn University Natural History Museum.

Photo: A fossilized egg of a therapod dinosaur, at the Auburn University Natural History Museum.

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A fossilized egg of a therapod dinosaur, at the Auburn University Natural History Museum.

Photo: A fossilized egg of a therapod dinosaur, at the Auburn University Natural History Museum.

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A fossilized egg of a therapod dinosaur, at the Auburn University Natural History Museum.

Photo: A ravine trapdoor spider (Cyclocosmia truncata) at the Auburn University Natural History Museum.

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A ravine trapdoor spider (Cyclocosmia truncata) at the Auburn University Natural History Museum.

Photo: Julie Jensen Director of Marketing | WVC O: 866.800.7326 | D: 702.443.9249 | E: j.jensen@wvc.org

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