Civil Rights
Movements, leaders, victories and the continuing fight for equality.
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Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
Wilmington, North Carolina once had a thriving Black middle class and an elected interracial government. In 1898 white supremacists used violence to overthrow that government, kill Black residents and drive many others from the city.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
An uncontrolled decompression is an undesired drop in the pressure of a sealed system, such as a pressurised aircraft cabin or hyperbaric chamber, that typically results from human error, structural failure, or impact, causing the pressurised vessel to vent into its surroundings or fail to pressurize at all. Such decompression may be classed as explosive, rapid, or slow: Explosive decompression (ED) is violent and too fast for air to escape safely from the lungs and other air-filled cavities in the body such as the sinuses and eustachian tubes, typically resulting in severe to fatal barotrauma. Rapid decompression may be slow enough to allow cavities to vent but may still cause serious barotrauma or discomfort. Slow or gradual decompression occurs so slowly that it may not be sensed before hypoxia sets in.
Decompression has several meanings, some of which are covered by several articles: Data decompression, the action of reversing data compression Decompression (physics), the release of pressure and the opposition of physical compression Decompression (altitude). the reduction of pressure and the related physiological effects due to increase in altitude or other equivalent reduction of ambient pressure below normal atmospheric pressure Decompression (diving), the reduction in pressure and the process of allowing dissolved inert gases to be eliminated from the tissues during ascent from a dive or while in a pressurised environment Decompression practice, the techniques and procedures for decompressing a diver Decompression theory, The study of safe and efficient decompression practice Uncontrolled decompression, catastrophic reduction of pressure in accidents involving pressure vessels such as aircraft Decompression (comics), in comic book storytelling, is the stylistic choice to tell a story mainly by visuals, with few words. Decompression (novel), a 2012 novel by Juli Zeh Decompression (surgery), a procedure used to reduce pressure on a compressed structure, such as spinal decompression Herniated disc decompression, a form of treatment for Spinal disc herniation, employed by chiropractors "Decompression" (The Outer Limits), an episode of the American television fiction series The Outer Limits Nerve decompression, a procedure to relieve direct pressure on a nerve Decompression sickness
Barotrauma is physical damage to body tissues caused by a difference in pressure between a gas space inside, or in contact with, the body and the surrounding gas or liquid. The initial damage is usually due to over-stretching the tissues in tension or shear, either directly by an expansion of the gas in the closed space or by pressure difference hydrostatically transmitted through the tissue. Tissue rupture may be complicated by the introduction of gas into the local tissue or circulation through the initial trauma site, which can cause blockage of circulation at distant sites or interfere with the normal function of an organ by its presence. The term is usually applied when the gas volume involved already exists prior to decompression. Barotrauma can occur during both compression and decompression events. Barotrauma generally manifests as sinus or middle ear effects, lung overpressure injuries and injuries resulting from external squeezes. Decompression sickness is indirectly caused by ambient pressure reduction, and tissue damage is caused directly and indirectly by gas bubbles. However, these bubbles form out of supersaturated solution from dissolved gases, and are not generally considered barotrauma. Decompression illness is a term that includes decompression sickness and arterial gas embolism caused by lung overexpansion barotrauma. It is also classified under the broader term of dysbarism, which covers all medical conditions resulting from changes in ambient pressure. Barotrauma typically occurs when the organism is exposed to a significant change in ambient pressure, such as when a scuba diver, a free-diver or an airplane passenger ascends or descends or during uncontrolled decompression of a pressure vessel such as a diving chamber or pressurized aircraft, but can also be caused by a shock wave. Ventilator-induced lung injury (VILI) is a condition caused by over-expansion of the lungs by mechanical ventilation used when the body is unable to breathe for itself and is associated with relatively large tidal volumes and relatively high peak pressures. Barotrauma due to overexpansion of an internal gas-filled space may also be termed volutrauma.
Alaska Airlines Flight 1282 was a scheduled domestic passenger flight operated by Alaska Airlines from Portland International Airport in Portland, Oregon, to Ontario International Airport in Ontario, California. Shortly after takeoff on January 5, 2024, a door plug on the Boeing 737 MAX 9 aircraft blew out, causing an uncontrolled decompression of the aircraft. The aircraft returned to Portland for an emergency landing. All 171 passengers and 6 crew members survived the accident, with three receiving minor injuries. According to the National Transportation Safety Board (NTSB) final report, the probable cause of the Alaska Airlines Flight 1282 door plug blowout was a systemic failure of Boeing's manufacturing process and ineffective oversight by the Federal Aviation Administration (FAA). The in-flight separation was caused by four crucial bolts that were never reinstalled after being removed at the factory.
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Mae Jemison, aboard Space Shuttle Endeavour in 1992.
