Tourists walk on pathways through a flowerbed design known as ‘The Australian Billabong’ at the Floriade flower festival in Canberra (© REUTERS/TimWimborne)(Bing Australia)

Adélie penguins at Possession Island, Antarctica (© Tui De Roy/Minden Pictures)(Bing Australia)

Sequence of colour-enhanced images of Jupiter (© Enhanced Image by Gerald Eichstädt and Sean Doran, CC BY-NC-SA, based on images provided Courtesy of NASA/JPL-Caltech/SwRI/MSSS)(Bing Australia)

Tintern Abbey, Wales (© Lynda Morris Photography/Getty Images)(Bing Australia)

Aerial view of Marlborough Sounds, New Zealand (© Mathias Ortmann/Getty Images)(Bing Australia)

Cleveland Clinic Lou Ruvo Centre for Brain Health in Las Vegas, Nevada (© Garry Belinsky/Offset)(Bing Australia)

Octopus spotted during a night dive near Kona, Hawaii (© Jeff Milisen/Alamy)(Bing Australia)

Letchworth State Park, New York (© Jay O'Brien/Danita Delimont)(Bing Australia)

Bubble Nebula (NGC 7635) (© NASA, ESA, and the Hubble Heritage Team STScI/AURA)(Bing Australia)

Arches National Park, Moab, Utah (© Whit Richardson/Alamy Stock Photo)(Bing Australia)

Boats massing for the Barcolana Regatta in the Gulf of Trieste, Italy (© Ababsolutum/E+/Getty Images)(Bing Australia)

Close-up of a dragonfly wing (© Azwar Thaufeeq/500px/Getty Images)(Bing Australia)

Ashdown Forest, Misty Sunrise, East Sussex, United Kingdom (© Tim Stocker Photography/Getty Images)(Bing Australia)

Red Wattlebird (Anthochaera carunculata), Victoria, Australia (© plainpicture/Minden Pictures/Jan Wegener/BIA)(Bing Australia)

Highbush blueberry plants in Acadia National Park, Maine (© Danita Delimont/Gallo Images/Getty Images Plus)(Bing Australia)

Autumn leaves and goldfish in Tokyo, Japan (© qrsk/Moment/Getty Images)(Bing Australia)

Chimney Rock and Uncompahgre National Forest, Colorado (© Cory Marshall/Tandem Stills + Motion)(Bing Australia)

Aerial view of a pumpkin patch in Half Moon Bay, California (© Tinker Street/Michael O'Neal/Gallery Stock)(Bing Australia)

Pale-throated sloth perched in a tree on Sloth Island, Essequibo River, Guyana (© Suzi Eszterhas/Minden Pictures)(Bing Australia)

County Bridge in New Hampshire (© Denis Tangney Jr/E+/Getty Images)(Bing Australia)

Blackbird eating a crab apple in a garden in Wiltshire, United Kingdom (© Nick Upton/Minden Pictures)(Bing Australia)

A polar bear family near the Hudson Bay in Churchill, Manitoba, Canada (© Marco Pozzi Photographer/Getty Images)(Bing Australia)

'April Pine: Shifting Horizons' at Sculpture by the Sea, Bondi, 2018 (© katacarix/Shutterstock)(Bing Australia)

Ring-tailed lemurs in Madagascar for World Lemur Day (© Image Source/Alamy)(Bing Australia)

Klaus Littmann's 'FOR FOREST: The Unending Attraction of Nature' in Wörthersee Stadion, Klagenfurt, Austria (© UNIMO)(Bing Australia)

Devotees light oil lamps on the banks of the Sarayu River in Ayodhya, India (© Rajesh Kumar Singh/AP Photo)(Bing Australia)

Fort Rock Valley Historical Homestead Museum, Oregon (© Prisma by Dukas Presseagentur GmbH/Alamy)(Bing Australia)

Straw-coloured fruit bats in Kasanka National Park, Zambia (© Nick Garbutt/Minden Pictures)(Bing Australia)

Charles Bridge over the Vltava River in Prague (© Martin Moxter/Offset)(Bing Australia)

Corvin Castle, Romania (© DCPmedia/Shutterstock)(Bing Australia)

Spring in Uluru-Kata Tjuta National Park, Australia (© Sabine Leuenberger/Alamy Stock Photo)(Bing Australia)