Polar bear investigating camera, Churchill, Manitoba (© Matthias Breiter/Minden Pictures)

A lone wolf standing tall amid autumn colours near Montebello, Que. (© Thousand Word Images by Dustin Abbott/Getty Images)

Marigolds decorate a cemetery in Patzcuaro, Michoacan, Mexico, for a Day of the Dead ceremony (© Daniel Elizalde S/Shutterstock)

Moon jelly and an aggregation of stingless golden jellyfish in a landlocked marine lake, Raja Ampat, West Papua, Indonesia (© Alex Mustard/Minden Pictures)

Lanterns illuminated for the Diwali festival, Mumbai, India (© RAMNIKLAL MODI/Shutterstock)

Pont Rouge (Red Bridge) over the Palmer River in Sainte-Agathe-de-Lotbinière, Quebec (© Jean Surprenant/Getty Images)

Female numbat in Brookton, Western Australia, Australia (© Martin Willis/Minden Pictures)

Mack Arch Rock at sunrise on the southern Oregon coast (© Dennis Frates/Alamy)

Ancient rock tombs carved into the cliff near Dalyan, Turkey (© Reinhard Schmid/eStock Photo)

Nohsngithiang Falls in Meghalaya, India (© Upamanyoo Das/Shutterstock)

The Canadian 'Brooding Soldier' memorial commemorating the second battle of Ypres, St. Julien, Belgium (© Richard Lautens/Toronto Star via Getty Images)

Beavers Bend Resort Park near Broken Bow, Oklahoma (© Inge Johnsson/Alamy)

Aerial view of El Tajo gorge and the Puente Nuevo bridge in Ronda, Málaga, Spain (© Jude Newkirk/Amazing Aerial Agency)

First Cliff Walk on First near Grindelwald, Switzerland (© Hans-Georg Eiben/eStock Photo)

Manatee in Florida (© Paul E Tessier/Cavan Images/Offset by Shutterstock)

The Jacobite steam train crossing the Glenfinnan Viaduct in Inverness-shire, Scotland (© The Escape of Malee/Shutterstock)

A frost covered grass field with trees in autumn colours; Iron Hill, Quebec (© plainpicture/Design Pics/David Chapman)

Bohemian Switzerland National Park near Tisá, Czech Republic (© Amazing Aerial Agency/Offset)

A Bohemian waxwing in Canada (© Mircea Costina/Alamy)

'A New Breath' by artist Saype in Moléson-sur-Gruyères, Switzerland (© Valentin Flauraud/Shutterstock)

Forest near the village of Invergarry, Scotland (© Matt Anderson Photography/Getty Images)

Irohazaka road near Nikko, Japan (© LightRecords/Shutterstock)

Cross-section of a fossilized ammonite shell (© Marianna Armata/Getty Images)

Chocolate Hills in Bohol, Philippines (© Danita Delimont/Offset by Shutterstock)

Red squirrels in Cairngorms National Park, Highlands, Scotland (© Scotland: The Big Picture/Minden Pictures)

Aerial view of Penn Station and the New York City skyline at night in the 1950s (© R. Gates -Staff/Getty Images)

Celebration of the holiday season at Nathan Philips Square, Toronto (© CharlineXia Ontario Canada Collection/Alamy Stock Photo)

Centennial Bridge towering above Soberanía National Park, Panama (© David Tipling/Universal Images Group via Getty Images)

Aerial view of snowy peaks of Vinicunca (aka Rainbow Mountain), Peru (© Jude Newkirk/Amazing Aerial Agency)

African bush elephants at Masai Mara National Reserve in Kenya (© Yva Momatiuk and John Eastcott/Minden Pictures)