A man treats a woman affected by pepper spray as Washington Metropolitan Police officers clash with demonstrators trying to pull down the statue of U.S. President Andrew Jackson in the middle of Lafayette Park in front of the White House during racial inequality protests in Washington, D.C., U.S., June 22, 2020. Dozens of law enforcement officers, led by U.S. Park Police, stormed into the square, swinging batons and firing chemical agents to scatter protesters. By dark, police had taken control and outnumbered demonstrators in the immediate area. (Photo by Tom Brenner/Reuters)

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)

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)

These jaw-some images show what its like to look inside the mouth of a tiger shark. Captured in amazing detail, the unique pictures show the alien-like anatomy of the shark and reveal rows upon rows of razor sharp teeth and white coloured gills. The incredible photographs were taken when a curious shark began to inspect the camera of British born photographer, Adam Hanlon, 46. After sensing electronic impulses omitted by Adams camera, the inquisitive creature began to gently mouth at the cameras housing allowing him capture the unusual perspective. (Photo by Adam Hanlon/Caters News)

A Waura Indian woman watches the activities of this year's “quarup”, a ritual held over several days to honour in death a person of great importance to them, in Xingu National Park, Mato Grosso State, August 24, 2013. This year the Waura tribe is honouring their late cacique (chief) Atamai, who died in 2012 and helped created the Xingu Park, and his important contribution in facilitating communication between white Brazilians and Indians. (Photo by Ueslei Marcelino/Reuters)