Anechoic chamber, Copenhagen, Denmark (© Alastair Philip Wiper/Science Photo Library)(Bing Australia)
The Northern Beaches in Sydney, New South Wales, Australia (© Ian Bird/Rex Features)(Bing Australia)
Young chacma baboon in Moremi Game Reserve, Okavango Delta, Botswana (© Chris Schmid/Aurora Photos/Offset)(Bing Australia)
Giant mural in Pachuca, Hidalgo state, Mexico (© Omar Torres/Getty Images)(Bing Australia)
A Cape white-eye perched (© Rob Hofmeyr/Mammoth HD)(Bing Australia)
Flinders Street Station in Melbourne, Victoria, Australia (© Ashley Cooper/Aurora)(Bing Australia)
Galápagos sea lion and pup, Rábida Island, Galápagos Islands, Ecuador (© Pete Oxford/Minden Pictures)(Bing Australia)
Xinyuan County, China (© Danny Hu/Getty Images)(Bing Australia)
Wreckage of the SS Thistlegorm in the Red Sea (© Alex Mustard/Minden Pictures)(Bing Australia)
Dolwyddelan Castle in Wales (© Jim Richardson/National Geographic Creative/Alamy)(Bing Australia)
Lavender blooming in northern Thailand (© Tanat Loungtip/Alamy)(Bing Australia)
Man fishes in the Ord River at Kununurra, Western Australia (© Andrew McInnes/Alamy)(Bing Australia)
Milky Way above Mount Rainier in Mount Rainier National Park, Washington (© Brad Goldpaint/Aurora Photos)(Bing Australia)
Fox kits playing in the Rocky Mountain foothills near Cascade, Montana (© Jason Savage/Tandem Stills + Motion)(Bing Australia)
Coloured scanning electron micrograph of a seven-spot ladybird in flight (© Power and Syred/Science Photo Library)(Bing Australia)
The Biosphere museum in Montreal, Canada (© Guenther Schwermer/REX/Shutterstock)(Bing Australia)
Installation by artist Paul de Kort in De Biesbosch National Park, Netherlands (© Frans Lemmens/Alamy)(Bing Australia)
Saffrondrop bonnet mushrooms in Meerdaal, Belgium (© Danny Lap/Minden Pictures)(Bing Australia)
Kanas National Nature Reserve in Xinjiang Province, China (© zhouyousifang/Getty Images)(Bing Australia)
Burano, in the Venetian Lagoon, Italy (© Digitaler Lumpensammler/Getty Images)(Bing Australia)
A green sea turtle shows off its shell (© Sergi Garcia Fernandez/Minden Pictures)(Bing Australia)
An elevated walkway in the Lujiazui district of Shanghai, China (© Mark Harris/Getty Images)(Bing Australia)
Lake Siskiyou reflects snowy Mount Shasta in northern California (© Walter Bibikow/Danita Delimont/Alamy)(Bing Australia)
Common kestrel hunting for rodents (© Bertie Gregory/Corbis)(Bing Australia)
Uluru in Uluru–Kata Tjuta National Park, Australia (© Lachlan Fennen/500px)(Bing Australia)
Autumn aspens in Grand Teton National Park, Wyoming (© Matt Anderson Photography/Getty Images)(Bing Australia)
Dyed silk hanging to dry in Marrakech, Morocco (© David Noton Photography/Alamy)(Bing Australia)
Marshall Point Lighthouse near Port Clyde, Maine (© Stephen Ippolito/REX)(Bing Australia)
To Sua Ocean Trench in Lotofaga, Upolu, Samoa (© Danita Delimont/Offset)(Bing Australia)
Salzach River in Austria (© T Schäffer/age fotostock)(Bing Australia)