Laser show at night on Burj Khalifa, world's tallest tower, Downtown Burj Dubai, Dubai, United Arab Emirates

Sawyer Glacier calving from Tracy Arm-Fords Terror Wilderness area in Southeast Alaska, United States of America

Fireworks display for Volcanoes Festival in Santorini, Cyclades, Greek Islands, Greece

Nigerian chief at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

A murmuration of starlings, numbering well over a million birds, flock together to roost at dusk on the Avalon Marshes at Shapwick Heath Nature Reserve in Somerset

Nigerian chiefs at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

A murmuration of starlings, numbering well over a million birds, form the shape of an atomic bomb mushroom cloud as they come in to roost at dusk on the Avalon Marshes at Shapwick Heath Nature Reserve in Somerset

Nigerian chiefs at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

Starlings, a murmuration of a million birds, in mushroom cloud shape as they drop to roost on Avalon Marshes, UK

Ceremonial guard and band of 76th Maharana of Mewar, Shriji Arvind Singh Mewar of Udaipur, at Holi Fire Festival, City Palace, Rajasthan, India

Starlings, a murmuration of a million birds, in mushroom cloud shape as they drop to roost on Avalon Marshes, UK

Nigerian chief at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

Starlings, a murmuration of a million birds gather to roost above Avalon Marshes in Somerset, UK

Nigerians at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

Ceremonial parade of 76th Maharana of Mewar, Shriji Arvind Singh Mewar of Udaipur, at Holi Fire Festival, City Palace, Rajasthan, India

Nigerian chief at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

A murmuration of starlings, numbering well over a million birds, gather as a flock to roost at dusk on the Avalon Marshes at Shapwick Heath Nature Reserve in Somerset

Nigerian chiefs at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

Nigerian chief at tribal gathering durbar cultural event at Maiduguri in Nigeria, West Africa

Starlings, a murmuration of a million birds gather to roost above Avalon Marshes in Somerset, UK

Starlings, a murmuration of a million birds gather to roost on Avalon Marshes at Shapwick Heath Nature Reserve, UK

Spectacular light show at the illuminated Angkor Wat temple with reflection in the moat at night, Angkor Wat, near Siem Reap, Siem Reap Province, Cambodia, Asia

Spectacular light show at the illuminated Angkor Wat temple with reflection in the moat at night, Angkor Wat, near Siem Reap, Siem Reap Province, Cambodia, Asia

Hot-air balloons, Night Glow of the Balloons, Balloon Sail, Kiel Week 2008, Kiel, Schleswig-Holstein, Germany, Europe

Spectacular amusement rides at the Oktoberfest in Munich, at night, Munich, Upper Bavaria, Bavaria, Germany, Europe

Celebration of Light Fireworks, English Bay, Vancouver, British Columbia, Canada

Celebration of Light Fireworks, English Bay, Vancouver, British Columbia, Canada