A family of koalas with a little joey (© Paco Alcantara/Getty Images) © (Bing Australia)

Bees in San Felice Circeo, Italy (© Massimo Borchi/4Corners) © (Bing Australia)

Stillaguamish River of Mt. Baker-Snoqualmie National Forest, Washington, USA (© Stephen Matera) © (Bing Australia)

Surfer riding a wave near Pacific City, Oregon, USA (© Gabe Rogel/Aurora Photos) © (Bing Australia)

Driver training course in Minnesota, USA (© Richard Hamilton Smith/Corbis) © (Bing Australia)

Travertine terraces of Pamukkale, Turkey (© Ocean/Corbis) © (Bing Australia)

Olive trees reflected in the waters of Barragem de Alqueva (Alqueva Lake) near Alqueva, Portugal (© Paul Bernhardt/Lonely Planet) © (Bing Australia)

Close up of a colourful sea fan off Raja Ampat Islands, West Papua, Indonesia (© Matthew Oldfield Underwater Photography/Alamy) © (Bing Australia)

Bridge over the Loire River, to Amboise, France (© ESCUDERO Patrick/Hemis/Corbis) © (Bing Australia)

Young caracal in a wildlife sanctuary near Windhoek, Namibia (© Ignacio Palacios/Lonely Planet) © (Bing Australia)

Trussum Pond and cypress trees, Delaware, USA (© David Muench/Stone/Getty Images) © (Bing Australia)

Fog over Spray Park in Mount Rainier National Park with Glacier Peak in the background, Washington (© Stephen Matera) © (Bing Australia)

Harvesting cotton in Costa Rica (© Fernando Bueno/Getty Images) © (Bing Australia)

Village of Gásadalur below Heinanova mountain, with waterfall cascading over cliff into the Atlantic Ocean, Faroe Islands (© Kimberley Coole/Lonely Planet) © (Bing Australia)

The exterior of the Ellis Island Immigration Museum in New York Harbor, New Jersey, USA (© Clarence Holmes/age fotostock/SuperStock) © (Bing Australia)

Underwater view of spawning salmon in Katmai National Park, Alaska (© Paul Souders/Corbis) © (Bing Australia)

A bus descends the serpentine turns of Tongtian Avenue on Tianmen Mountain near Zhangjiajie, Hunan Province, China (© Tom Horton/Getty Images) © (Bing Australia)

Aerial shot of Whitehaven Beach, Whitsunday Island off Queensland, Australia (© imagebroker.net/Superstock) © (Bing Australia)

Cathedral of Pisa and its bell tower in Pisa, Italy (© Jean-Pierre Lescourret/Corbis) © (Bing Australia)

Raccoon building a nest in a Montana forest, USA (© Framepool) © (Bing Australia)

Fall colors in the Great Smoky Mountains, North Carolina, USA (© Nancy Rotenberg/Danita Delimont) © (Bing Australia)

Japanese maple tree next to pond at the Portland Japanese Garden in Portland, Oregon, USA (© Don Paulson/Jaynes Gallery/Danita Delimont) © (Bing Australia)

Detail of an autumn leaf (© Funkystock/age fotostock) © (Bing Australia)

European bee-eaters in Málaga province, Andalusia, Spain (© José Antonio Moreno/age fotostock) © (Bing Australia)

Autumn colors and Emigrant Peak, Paradise Valley, Montana, USA (© Carol Polich/Lonely Planet) © (Bing Australia)

Gunn Brook Falls in the Pioneer Valley region of Massachusetts (© Denis Tangney Jr./Getty Images) © (Bing Australia)

Banggai Cardinalfish, Lembeh Strait, North Sulawesi, Indonesia (© Daniela Dirscherl/age fotostock) © (Bing Australia)

Rambutans (© Hemis/Alamy) © (Bing Australia)

Jin Mao Tower and Huangpu River in Shanghai, China (© José Fuste Raga/age fotostock) © (Bing Australia)