Images Dated 22nd April 2013

Agate Bridge, a petrified log spanning ravine, Petrified Forest National Park, Arizona, United States of America, North America

View of the old city walls, Akko (Acre), UNESCO World Heritage Site, Israel, Middle East

Richard Feynman, caricature C015 / 6715
Richard Feynman (1918-1988). Caricature of the American theoretical physicist Richard Phillips Feynman. As a young man, Feynman worked on the American atomic bomb project at Los Alamos

Anaesthetic inhibiting an ion channel C015 / 6718
Anaesthetic inhibiting an ion channel

Leonard Euler, caricature C015 / 6711
Leonhard Euler (1707-1783). Caricature of the Swiss mathematician and physicist Leonhard Euler

James Watt, caricature C015 / 6706
James Watt (1736-1819). Caricature of the Scottish engineer and inventor James Watt. Watt made numerous practical improvements to the steam engine of his day

Augustin Cauchy, caricature C015 / 6700
Augustin Cauchy (1789-1857). Caricature of the French mathematician Augustin Cauchy. Cauchy was a pioneer of analysis and the theory of permutation groups

Joseph Priestley, caricature C015 / 6707
Joseph Priestley (1733-1804). Caricature of the British chemist and clergyman Joseph Priestley. Priestly is best known as the discoverer of oxygen

Pai Canyon, Mai Hong Son Province, Thailand, Southeast Asia, Asia

Cytochrome b5 molecule C015 / 6696
Cytochrome b5. Molecular model of cytochrome b5 from a cows liver

Black-tailed Godwits -Limosa limosa-, displaying, Texel, West Frisian Islands, province of North Holland, The Netherlands

Coast, sunset, Cefalu, Sicily, Italy, Europe

UK, England, London, Royal Victoria Dock from the Emirates Air Line or Thames Cable Car over River Thames, from Greenwich Peninsula to Royal Docks

Oak Acorn Quercus robur Brown Tree Flowering season Spring
Acorn of Quercus robur

Crab apple Carmine crab apple Malus x atrosanguinea Gorgeous
Cluster of shiny, red fruit of Carmine crab apple, Malus x atrosanguinea Gorgeous

Lavender Lavandula angustifolia Blue Cushion
Flower spikes of lavender, Lavandula angustifolia Blue Cushion

Gaura Gaura lindheimeri Whirling butterflies
Gaura lindheimeri Whirling butterflies. Stem with single, white, open flower and cluster of buds

Eryngium zabelii Big Blue Blue Perennial Flowering season Summer
Sea holly, Eryngium zabelii Big Blue, Close view of thistle-like flower head surrounded by silvery blue bracts

Bench in front of a wall with Lindisfarne Castle in the distance, Holy Island, Northumberland, UK, April 2013

UK, England, London, River Thames, O2 Arena (formerly Millennium Dome) and Canary Wharf skyline

UK, England, London, Emirates Air Line or Thames Cable Car over River Thames, from Greenwich Peninsula to Royal Docks, viewed across Royal Victoria Dock

UK, England, London, River Thames, O2 Arena (formerly Millennium Dome) and Canary Wharf skyline

UK, England, London, Earls Court Underground Station

UK, England, London, O2 Arena (formerly Millennium Dome) and Canary Wharf skyline from the Emirates Air Line or Thames Cable Car over River Thames, from Greenwich Peninsula to Royal Docks

UK, England, London, River Thames, O2 Arena (formerly Millennium Dome) and Canary Wharf skyline

UK, England, London, Millennium Bridge, London Bridge over the River Thames and The Shard

UK, England, London, River Thames, O2 Arena (formerly Millennium Dome) and Canary Wharf skyline

UK, England, London, River Thames, O2 Arena (formerly Millennium Dome) and Canary Wharf skyline

Queen Mothers Apartment, Topkapi Harem, Topkapi Palace, Istanbul, Turkey

A Goldeneye runs on the surface of a river near the remote village of Sosnovy Bor, some 320 km (200 miles) north of Minsk, April 21, 2013. Picture taken April 21, 2013

history, past, archeology, discovery, sex, , Fresco Wall Paintings, Buena Vista Images, 170425192

Quacking his way through life. Shot of a rubber duck against a studio background Shot of a rubber duck against a studio background

A beautiful coloured dawn casts its glow over Jackson lake in the Grand Tetons, Wyoming
Jackson Lake, Grand Teton National Park, 502591954

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Etsch valley towards the town of Bozen (Bolzano) seen from Mount Weisshorn. In the background the Texel (Tessa) and the Ortler mountain range

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Rosengarten also called Catinaccio mountain range in the Dolomites of South Tyrol (Alto Adige) during autumn. The Tschamin Valley also called Ciares after an early snowstorm

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Valley Pfossental (Val di Fosse) between Texel or Tessa mountain range and Oetztal alps in South Tyrol. Mountain farm Eishof. Tyrol, Austria, Europe. (Large format sizes available). Date: 30/04/2009

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Valley Pfossental (Val di Fosse) between Texel or Tessa mountain range and Oetztal alps in South Tyrol. Mount Hohe Weisse or Bianca Grandein the background. Tyrol, Austria, Europe

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White rhinoceros or square-lipped rhinoceros (Ceratotherium simum), Kenya, Africa (Large format sizes available). Date: 30/04/2009

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White rhinoceros or square-lipped rhinoceros (Ceratotherium simum), Kenya, Africa (Large format sizes available). Date: 30/04/2009

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River in Aberdare National Park just before it reaches the Karura Falls, Kenya, Africa. (Large format sizes available). Date: 30/04/2009

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Magura also spelled Maragua Fall in Aberdare National Park in Kenya, Africa(Large format sizes available). Date: 30/04/2009

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Karura Falls tumbles more than 300m into an abyss, Aberdare National Park, Kenya, Africa. (Large format sizes available). Date: 30/04/2009

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Chania Fall in Aberdare National Park in Kenya, Africa(Large format sizes available). Date: 30/04/2009

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Chania Fall in Aberdare National Park in Kenya, Africa(Large format sizes available). Date: 30/04/2009

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View of the primeval forest towards the peak of Satima (4001m) in Aberdare National Park, Kenya, Africa. (Large format sizes available). Date: 30/04/2009

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Giant Groundsel or Dendrosenecio (senecio keniodendron) in the Mount Kenya National Park, Kenya, with withered inflorescence

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Giant Groundsel or Dendrosenecio (senecio keniodendron) in the Mount Kenya National Park, Kenya, with withered inflorescence

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Giant Groundsel or Dendrosenecio (senecio keniodendron) in the Mount Kenya National Park, Kenya

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Giant Groundsel or Dendrosenecio (senecio keniodendron) in Mount Kenya National Park, Kenya. Giant Groundsel is endemic to the Afromontane high altitude environments of Africa's highest mountains

Asclepias curassavica Orange Perennial Annual
Butterfly feeding on Bloodflower, Asclepias curassavica

Bloodflower Asclepias curassavica Orange Perennial
Glass winged butterfly, Greta Oto feeding on Bloodflower, Asclepias curassavica. This butterfly is so called because its wings lack coloured scales and give the impression of glass

Lantana Lantana camara White Evergreen Shrub
Heliconius hecale zuleika butterfly feeding on clustered white flowers of Lantana camara

Yew, Taxus baccata
Fleshy, red fruit of Yew, Taxus baccata

Water lily Nymphaea Pink Perennial Flowering season Summer
Pink flower of Water lily, Nymphaea cultivar reflected in water and surrounded by lily pads

Asclepias, Asclepias curassavica
Glass winged butterfly, Greta Oto feeding on Bloodflower, Asclepias curassavica. This butterfly is so called because its wings lack coloured scales and give the impression of glass

Coneflower Black-eyed Susan Rudbeckia Yellow
Flowers of Rudbeckia cultivar with bright yellow petals surrounding central cone against blue sky

Pulsatilla vulgaris
Feathery seed head of Pasque flower, Pulsatilla vulgaris with water droplets collecting on individual tendrils

Virginia creeper Parthenocissus quinquefolia
Virginia creeper, Parthenocissus quinquefolia. Stem and leaves casting shadow over wood with vertical pattern of grain

Nerine Nerine undulata Pink Bulb Flowering season Autumn
Close, cropped view of flowers of Nerine undulata with narrow, pink, crinkled petals and protruding stamen

Narcissus Diamond Jubilee
Daffodil, Narcissus Diamond Jubilee. Cultivar develped especially for the Queens Diamond Jubilee in 2012 with white, trumpet shaped flower with orange centre

Mertensia pulmonarioides
Blue, funnel-shaped, pendent flowers of Virginia Bluebell, Mertensia virginica with water droplets on petals

Astrantia Masterwort Astrantia maxima Pink Perennial
Astrantia maxima flower head with umbel of small flowers surrounded by pale pink bracts

Rose campion Lychnis coronaria Pink Perennial
Close view of crimson flower of Rose campion, Lychnis coronaria with another behind

Hop Humulus lupulus Cream Perennial Summer Flowering
Flower cluster of Hop, Humulus lupulus growing from stem

Hazel Cob-nut Corylus avellana Green Shrub Tree
New, green leaves of Hazel, Corylus avellana

Butterfly Glass winged butterfly Greta Oto View Side
Glass winged butterfly, Greta Oto on unidentified plant. This butterfly is so called because its wings lack coloured scales and give the impression of glass

Globe artichoke Cynara scolymus Green Perennial
Developing flower head of Globe artichoke, Cynara scolymus

Maple Pere Davids Maple Acer davidii Green Deciduous
Leaf and winged seeds of Pere Davids Maple, Acer davidii in sunlight

Sea holly Eryngium zabelii Big Blue Blue Perennial
Sea holly, Eryngium zabelii Big Blue, Close view of thistle-like flower head surrounded by silvery blue bracts

Gypsophila Rosenschlier White Annual Flowering season Summer
Small, white flowers of Gypsophila Rosenschlier, selective focus

Aster Aster Novi-Belgii Royal ruby Purple Perennial
Flowers of Aster Novi-Belgii Royal ruby. Selective focus

Globe thistle Echinops Brown Perennial Flowering season Summer
Spherical seed heads of Globe thistle, Echinops cultivar

Vitis vinifera Queen of Esther Red Perennial
Vitis vinifera Queen of Esther, close cropped view of red and yellow, variegated leaf

Cosmos Cosmos bipinnatus Sensation Picotee
Single, saucer-shaped flower of Cosmos bipinnatus Sensation Picotee with pinkish white petals irregularly edged in crimson surrounding yellow centre

Cosmos bipinnatus Sensation Picotee Pink Annual
Single, saucer-shaped flower of Cosmos bipinnatus Sensation Picotee with pinkish white petals irregularly edged in crimson surrounding yellow centre with hoverfly

Cornflower Centaurea cyanus Blue Annual Summer Flowering
Single Cornflower, Centaurea cyanus

Cosmos Cosmos bipinnatus Pink Annual Perennial
Single, saucer-shaped flower of Cosmos bipinnatus with pale pink petals surrounding yellow centre

Clematis Clematis tangutica Yellow Perennial
Yellow flowers of Clematis tangutica with fluffy seedheads in foreground against blue sky

Clematis, Clematis tangutica
Yellow flowers of Clematis tangutica

Cineraria
Single flower of Cineraria, Pericallis x hybrida

Feverfew Tanacetum parthenium White Perennial
Daisy-like flowers of Feverfew, Tanacetum parthenium

viola, viola cornuta sorbet xp delft blue
F1 Viola Delft Blue

venus fly trap, dionaea muscipula
0721 Venus fly trap Dionaea muscipula

wood violet, viola riviniana purpurea group
Viola riviniana Purpurea Group

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