Daffodils in front of Cardiff Castle, Wales (© Exactostock/SuperStock) © (Bing United States)

Hug Point on the Oregon coast (© Tanmay Ganacharya) © (Bing United States)

Karen Ramstead’s sled dog team during the 2005 Iditarod Great Sled Race in Alaska (© AlaskaStock/Photolibrary) © (Bing United States)

A variety of bacteria, yeast, and fungus on a kitchen sponge (© Dennis Kunkel Microscopy, Inc./Visuals Unlimited, Inc.) © (Bing United States)

Hartford, Connecticut skyline (© Enzo Figueres/Getty Images) © (Bing United States)

Little Tahoma peak in the background with wildflowers in the Upper Paradise Valley of Mt. Rainier National Park, Washington (© Stephen Matera) © (Bing United States)

Dried casings and seeds of the Chinese lantern plant (© Skip Moody-Rainbow/Corbis) © (Bing United States)

Mexican free-tailed bats in the sky above Austin, Texas (© imagebroker.net/SuperStock) © (Bing United States)

Knysna Loerie in Knysna, South Africa (© Hoberman Collection/SuperStock) © (Bing United States)

Galápagos sea lions rest on Española Island in the Galápagos Islands, Ecuador (© Michio Hoshino/Getty Images) © (Bing United States)

Market Square in Old Town, Warsaw, Poland (© Keren Su/Corbis) © (Bing United States)

Traditional fishing craft drawn up on the sandy beach of Denpasar, Indonesia (© Tim Mannakee/Corbis) © (Bing United States)

Ruby brittle star on coral off the shore of the Cayman Islands (© Hal Beral/Corbis) © (Bing United States)

Interior view of the Milwaukee Art Museum in Milwaukee, Wisconsin (© Chuck Eckert/age fotostock) © (Bing United States)

O’Connell Bridge over the River Liffey in Dublin, Ireland (© Design Pics/Corbis) © (Bing United States)

Panther chameleon tail, Madagascar (© Joe McDonald/Corbis) © (Bing United States)

Aerial view of maturing rice fields, Uruguay (© Guillermo Robles/Corbis) © (Bing United States)

Crocus blossoms in early spring (© Don Johnston/age fotostock) © (Bing United States)

Palizzi Superiore in the Province of Reggio Calabria, Italy (© SIME/eStock Photo) © (Bing United States)

Women carrying water jugs near the Taj Mahal in Agra, India (© Peter Adams/Corbis) © (Bing United States)

Thunderstorm over the prairie in Montana (© Artbeats) © (Bing United States)

Highland cow on the Isle of Skye in Scotland, United Kingdom (© SIME/eStock Photo) © (Bing United States)

Ice cave on the north side of Mt. Erebus, Ross Island, Antarctica (© George Steinmetz/Corbis) © (Bing United States)

Cologne Cathedral in Cologne, Germany (© E. Teister/Blickwinkel/age fotostock) © (Bing United States)

Cherry blossoms frame the Jefferson Memorial in Washington, D.C. (© Degree/eStock Photo) © (Bing United States)

Segovia Bridge at night in Madrid, Spain (© María Galán/age fotostock) © (Bing United States)

Rafflesia flower in West Sumatra, Indonesia (© Fadil/Corbis) © (Bing United States)

Dusk at Senganmon on Izu Peninsula, Japan (© Tommy Tsutsui/Flickr/Getty Images) © (Bing United States)

Eiffel Tower, Paris, France (© Jamie Beck and Kevin Burg. Courtesy of the City of Paris and the operator of the Eiffel Tower. © Pierre Bideau for the lighting of the Eiffel Tower) © (Bing United States)