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Houston Refinery
The Houston Refinery was a 268,000-barrel-per-day full-conversion refinery on the Houston Ship Channel in Houston, Texas, built by Sinclair in 1918 and permanently shut down in 2025.
Houston Ship Channel
The Houston Ship Channel is a 52-mile dredged waterway in Texas connecting the Port of Houston to Galveston Bay and the Gulf of Mexico, opened in 1914.
Houston, we have a problem
"Houston, we have a problem" is a popular phrase signaling something has gone wrong, adapted from the Apollo 13 crew's 1970 radio transmission during an oxygen tank explosion.
Houtribdijk
The Houtribdijk, also called the Markerwaarddijk, is a 26 km dam in the Netherlands between Enkhuizen and Lelystad that separates the IJsselmeer from the Markermeer and carries the N307 road.
Houziyan hydroelectric plant
Houziyan hydroelectric plant (猴子岩水电站) is a 1,700 MW hydropower station on the Dadu River in Kangding, Sichuan, China, with its first unit generating from January 2017.
Hover Lab
Hover Lab, known in Korean as Garosero (가로세로연구소), is a South Korean YouTube channel founded in 2018 that publishes political commentary and celebrity exposés.
Hoverboard
A hoverboard, formally a self-balancing scooter, is a two-wheeled electric vehicle controlled by shifting body weight. Despite the name, it rolls on wheels and does not hover.
Hovercraft
A hovercraft, formally an air cushion vehicle, is an amphibious craft that rides above water, ice, mud, and sand on a cushion of pressurized air held by a flexible skirt.
Hovering autonomous underwater vehicle
A hovering autonomous underwater vehicle (HAUV) is an underwater robot that uses thrusters to hold a fixed position, used for ship hull inspection and harbor security.
How might we
A "How might we" question is an open-ended design thinking question that reframes a problem statement as an opportunity, launching brainstorming sessions and ideation after research.
Howa Type 89 (式小銃)
The Howa Type 89, also called the Type 89 5.56mm rifle (89式小銃), is a Japanese gas-operated assault rifle adopted in 1989 as the service rifle of the Japan Self-Defense Forces.
Howard Brenner
Howard Brenner (1929–2014) was an American chemical engineer and fluid dynamicist, Willard Henry Dow Professor at MIT from 1981 to 2005, who coauthored Low Reynolds Number Hydrodynamics, one of the most cited books in fluid mechanics.
Howard Cary
Howard Cary, born Henry Howard Cary (1908–1991), was an American engineer who led the Beckman DU spectrophotometer's development and founded Applied Physics Corporation, maker of Cary recording spectrophotometers.
Howard Elton McKenzie
Howard Elton McKenzie is an aerospace engineer and Boeing's chief engineer since March 2023, leading over 60,000 engineers, who was elected to the National Academy of Engineering in 2026.
Howard H. Kehrl
Howard H. Kehrl, born Howard Harmon Kehrl, was an American automotive engineer and General Motors executive who rose from research engineer in 1948 to vice chairman.
Howard Hughes
Howard Robard Hughes Jr. (1905–1976) was an American aviator, film producer, and billionaire businessman who set aviation speed records in the 1930s, built Hughes Aircraft, and controlled Trans World Airlines.
Howard J. Bruschi
Howard J. Bruschi is an American nuclear engineer who led development of Westinghouse's passively safe AP600 and AP1000 reactors, retiring as senior vice president and chief technology officer.
Howard Kent Birnbaum
Howard Kent Birnbaum (1932–2005) was an American materials scientist and metallurgist at the University of Illinois, known for the hydrogen-enhanced localized plasticity mechanism of hydrogen embrittlement.
Howard L. Hartman
Howard L. Hartman (1924–2002) was an American mining engineer who held an endowed chair at the University of Alabama and was elected to the National Academy of Engineering in 1994.
Howard Pearlman
Howard Pearlman is an American combustion scientist who earned a 1992 Ph.D. at Northwestern University and studied flame balls, cool flames, and low-temperature autoignition in reduced gravity.
Howard R. Baum
Howard R. Baum (1936–2025) was an American mechanical engineer and NIST Fellow whose 1978 low Mach number formulation with Ronald Rehm underlies the Fire Dynamics Simulator used by fire safety engineers worldwide.
Howard S. Jones Jr.
Howard St. Claire Jones Jr. (1921–2005) was an American electrical engineer and inventor who held 31 patents, including conformal antennas used in U.S. missiles and the Voyager spacecraft.
Howard Wilson Emmons
Howard Wilson Emmons (1912–1998) was an American mechanical engineer at Harvard, called "Mr. Fire Research," who chaired the study behind the Fire Research and Safety Act of 1968.
Howdy (streaming service)
Howdy is a subscription streaming service owned by Roku, launched in the United States in 2025, offering an ad-free catalog of licensed movies and shows for $2.99 per month.
Howe Sound Mill power station
Howe Sound Mill power station is a biomass-fired cogeneration power station at the Howe Sound Pulp and Paper mill in Port Mellon, British Columbia, Canada.
Howe truss
The Howe truss is a bridge truss patented by William Howe in 1840, combining timber diagonals in compression with wrought iron vertical rods in tension.
Howitzer
A howitzer, from German Haubitze and Czech houfnice, is an artillery piece firing heavy shells at low velocity on a curved trajectory to hit targets behind cover.
Howmet Aerospace
Howmet Aerospace Inc. is an American advanced manufacturing company headquartered in Pittsburgh, Pennsylvania, that produces engineered metal components for aircraft engines, airframes, fastening systems, and forged aluminum truck wheels.
Howrah Bridge
Howrah Bridge (হাওড়া ব্রিজ), officially Rabindra Setu, is a steel cantilever bridge over the Hooghly River linking Howrah and Kolkata in West Bengal, opened in 1943 and carrying about 100,000 vehicles daily.
Howrah railway station (হাওড়া রেলওয়ে স্টেশন)
Howrah railway station (হাওড়া রেলওয়ে স্টেশন), also called Howrah Junction, is a major railway terminus in Howrah, West Bengal, with 24 platforms and over 600 trains a day.