The Oscar (Astronotus ocellatus) is a species of fish from the cichlidfamily. In South America, where the species occurs, they are often found for sale as a food fish in the local markets. The species is also a popular aquarium fish. They have been reported to grow to a length of 45 cm (ca. 18 in) and a mass of 1.6 kg (3.5 lb).Photo credit: Jón Helgi Jónsson
The bassoon evolved from the dulcian. Although the process of evolution from its predecessor is unknown, the bassoon much as it appears in its current form appeared in a late 17th century painting, and a three-keyed bassoon has been dated to 1699. The modern bassoon exists in two distinct primary forms, the Buffet system and the Heckel system. The Buffet system is played primarily in France but also in Belgium and parts of Latin America, while the Heckel system is played in the majority of the world.Photo credit: Gregory Maxwell
Over 100,000 people attended the funeral of Armenian-Turkish journalist Hrant Dink. Dink, noted for his opinions on Turkish-Armenian reconciliation, had been prosecuted three times for denigrating Turkishness, receiving multiple death threats which culminated in his assassination on January 19, 2007. During the march, funeral attendees carried placards reading "We are all Hrant Dink" and "We are all Armenians" in Turkish, Armenian and Kurdish. The building on the right with the black banner is the office of Agos, where Dink was killed.Photo credit: Kerem Özcan/Diliff
The Osprey (Pandion haliaetus) is a medium large raptor which is a specialist fish-eater with a worldwide distribution. It is often known by other colloquial names such as Fish Hawk, Sea Hawk or Fish Eagle.
The Osprey is particularly well adapted to its diet, with reversible outer toes, closable nostrils to keep out water during dives, and backwards facing scales on the talons which act as barbs to help catch fish.Photo credit: NASA
A mole cricket, an insect belonging to the Gryllotalpidaefamily. Mole crickets are common insects, found on every continent except Antarctica, but because they are nocturnal and spend nearly all their lives underground in extensive tunnel systems, they are rarely seen. This specimen is likely to be Gryllotalpa brachyptera and is about 3.5 cm (1.4 in.) in size.Photo credit: Fir0002
A demonstration of the lilac chaseroptical illusion, also known as the Pac-Man illusion. When one stares at the cross in the center of the image for 10–20 seconds, two effects will appear in order: One, the moving empty space between dots will appear as a green dot. Two, the moving green dot will appear to wipe out the purple dots, until only the green dot is visible. A separate effect appears if the eyes move away from the center, showing a ring of green dots.Image credit: Jeremy.Hinton
The Great Hall inside the Thomas Jefferson Building of the Library of Congress, Washington, D.C. This building is the oldest of the Library's three buildings and is known for its elaborately decorated facade and interior, for which more than forty American painters and sculptors produced commissioned works of art. Originally called simply the "Library of Congress Building" its name was changed to honor former President Thomas Jefferson, who had been a key figure in the establishment of the Library in 1800.Photo credit: Diliff
The Scenic Railway, the world's oldest continually-operating roller coaster, found at Luna Park in Melbourne, Australia. Built in 1912, this is a side-frictionwooden roller coaster, meaning it lacks an extra set of wheels under the track to prevent cars from becoming airborne. Instead, a brakeman stands between the two cars (visible here wearing a purple vest and a backwards cap) and slows the ride down when necessary. It is one of only nine remaining side-friction coasters in the world.Photo credit: Stevage
A smoky day at the Sugar Bowl, a photograph of a Hupa fisherman by Edward S. Curtis. The Hupa are an Athabaskantribe of over 2,600 individuals that inhabits northwestern California. They are the southernmost representatives of the Northwest Coast culture, although some of their customs are not characteristic of that culture area.
Curtis was a practitioner of salvage ethnography, which is the practice of documenting what is left of a culture before it disappears. This assumed a particular significance during the 18th century and early 19th century as the American Indians were becoming separated from their traditional culture.Photo credit: Edward S. Curtis
This photo of an archetypalaviator from 1942 shows U.S. Army test pilot Lt. F.W. "Mike" Hunter wearing a flight suit and aviator sunglasses. An aviator (also pilot or airman) is a person who flies aircraft, whether for pleasure or as a profession. The word "aviatrix" was used to refer to female aviators, reflecting the word's Latin root, but is now seldom used, even as a gender-specific term. In civilian usage, the word airman is analogous with the nautical term seaman.Photo credit: Alfred T. Palmer, USOWI
Egeskov Castle is a Danishcastle located on the island of Funen. The castle is constructed on oakenpiles and located in a small lake of maximum depth five meters. Originally, the only access was by means of a drawbridge. According to legend, it took an entire forest of oak trees to build the foundation, hence the name Egeskov (literally: Oak forest).Photo credit: Malene Thyssen
The Red-necked Grebe (Podiceps grisegena) is a member of the grebe family of water birds. In summertime, adults are unmistakable, due to their red neck and white throat. In winter, the Red-necked Grebe is duskier than most grebes, with no white above the eye, and a thick, yellowish bill. It is a somewhat large grebe, about the same size as an average duck.Photo credit: Mdf