This photo taken on December 2, 2015 shows a lenticular cloud forming as white streaks from airplanes mark the blue sky, in a rare atmospheric phenomena above the town of Gevgelija on December 2, 2015. Lenticular clouds have been regularly confused for UFOs throughout history due to the their smooth, round or oval lens-shaped structure. (Photo by Armend Nimani/AFP Photo)

A woman looks at some of the 60 plane trees wrapped in a pink-and-white polka-dot design developed especially for Melbourne by Japanese contemporary artist Yayoi Kusama titled “Ascension of Polka Dots on the Trees”, in Melbourne on November 27, 2024. The National Gallery of Victoria’s (NGV) world-premiere blockbuster exhibition Yayoi Kusama will be on display from 15 December 2024 to 21 April 2025. (Photo by William West/AFP Photo)

An American white pelican takes flight on the island of Petatan in the municipality of Cojumatlan de Regules, Michoacan state, Mexico on February 23, 2024. The island becomes home to the pelicans during the winter, when they travel from the north of the United States and the south of Canada to the warmer waters of Lake Chapala in Mexico. The birds are a tourist attraction and people gather on the island's boardwalk to feed them and watch them fly. (Photo by Enrique Castro/AFP Photo)

Myoung Ho Lee‘s 2007 Tree series is about as peaceful and serene as the scenery itself. In the series, the young South Korean photographer touches upon the subjects of physical isolation and visual confirmation. By placing the tree in front of a stark white background, Lee creates a false separation that plays a delightful game with the mind’s eye.

The twin lighthouses of St Joseph on Lake Michigan have been transformed by a winter storm. Ice encases the buildings, giant icicles hang from the piers and the beach is frosted white. Here: Huge icicles hang from the pier. (Photo by Mike Kline/Barcroft Media)

Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO3. In its (rare) pure form, it is typically a rose-red color, but impure specimens can be shades of pink to pale brown. It streaks white, and its Mohs hardness varies between 3.5 and 4. Its specific gravity is between 3.5 and 3.7. It crystallizes in the trigonal system, and cleaves with rhombohedral carbonate cleavage in three directions.

President Barack Obama speaks to the press in the Briefing Room of the White House April 27, 2011 in Washington, DC. US President Barack Obama released a long form version of his birth certificate after extended criticism by those who do not believe he was born in the United States. (Photo by Brendan Smialowski/Getty Images)

The Florida Keys are famous for their diving, but they are less well known for another quirky attraction: the mailboxes residents use to decorate their driveways. From a fiberglass manatee in lipstick to a small white church, Reuters photographer Wolfgang Rattay documented this unusual aspect of local culture as he drove along the Ocean Highway that connects the islands. Photo: A mailbox in the shape of a fire truck is seen along the highway US-1 in the Lower Keys near Marathon in Florida, July 11, 2014. (Photo by Wolfgang Rattay/Reuters)