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Wallace S. Broecker
Wallace "Wally" Smith Broecker (November 29, 1931 – February 18, 2019) was an American geochemist. He was the Newberry Professor in the Department of Earth and Environmental Sciences at Columbia University, a scientist at Columbia's Lamont–Doherty Earth Observatory and a sustainability fellow at Arizona State University. He developed the idea of a global "conveyor belt" linking the circulation of the global ocean and made major contributions to the science of the carbon cycle and the use of chemical tracers and isotope dating in oceanography. Broecker popularized the term "global warming". He received the Crafoord Prize and the Vetlesen Prize. Life Born in Chicago in 1931,Lamont–Doherty Earth Observatory – The Earth Institute – Columbia Univers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago, Illinois
Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of United States cities by population, third-most populous city in the United States after New York City and Los Angeles. As the county seat, seat of Cook County, Illinois, Cook County, the List of the most populous counties in the United States, second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area, often colloquially called "Chicagoland" and home to 9.6 million residents. Located on the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a Chicago Portage, portage between the Great Lakes and the Mississippi River, Mississippi River watershed. It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire destroyed several square miles and left more than 100,000 homeless, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermohaline Circulation
Thermohaline circulation (THC) is a part of the large-scale Ocean current, ocean circulation driven by global density gradients formed by surface heat and freshwater fluxes. The name ''thermohaline'' is derived from ''wikt:thermo-, thermo-'', referring to temperature, and ', referring to salinity, salt content—factors which together determine the Water (molecule)#Density of saltwater and ice, density of sea water. Wind-driven surface currents (such as the Gulf Stream) travel Polar regions of Earth, polewards from the equatorial Atlantic Ocean, cooling and sinking en-route to higher latitudes - eventually becoming part of the North Atlantic Deep Water - before flowing into the ocean basins. While the bulk of thermohaline water upwelling, upwells in the Southern Ocean, the oldest waters (with a transit time of approximately 1000 years) upwell in the North Pacific; extensive mixing takes place between the ocean basins, reducing the difference in their densities, forming the Worl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Crisis
''Climate crisis'' is a term that is used to describe global warming and climate change and their effects. This term and the term ''climate emergency'' have been used to emphasize the threat of global warming to Earth's natural environment and to humans, and to urge aggressive climate change mitigation and transformational adaptation. The term ''climate crisis'' is used by those who "believe it evokes the gravity of the threats the planet faces from continued greenhouse gas emissions and can help spur the kind of political willpower that has long been missing from climate advocacy". They believe, much as ''global warming'' provoked more emotional engagement and support for action than ''climate change'', calling climate change a crisis could have an even stronger effect. A study has shown the term ''climate crisis'' invokes a strong emotional response by conveying a sense of urgency. However, some caution this response may be counter-productive and may cause a backlash due t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Failure
Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome caused by an impairment in the heart's ability to Cardiac cycle, fill with and pump blood. Although symptoms vary based on which side of the heart is affected, HF typically presents with shortness of breath, Fatigue (medical), excessive fatigue, and bilateral peripheral edema, leg swelling. The severity of the heart failure is mainly decided based on ejection fraction and also measured by the severity of symptoms. Other conditions that have symptoms similar to heart failure include obesity, kidney failure, liver disease, anemia, and thyroid disease. Common causes of heart failure include coronary artery disease, heart attack, hypertension, high blood pressure, atrial fibrillation, valvular heart disease, alcohol use disorder, excessive alcohol consumption, infection, and cardiomyopathy. These cause heart failure by altering the structure or the function of the heart or in some cases both. There are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Engineering
Geoengineering (also known as climate engineering or climate intervention) is the deliberate large-scale interventions in the Earth’s climate system intended to counteract human-caused climate change. The term commonly encompasses two broad categories: large-scale carbon dioxide removal (CDR) and solar radiation modification (SRM). CDR involves techniques to remove carbon dioxide from the atmosphere and is generally considered a form of climate change mitigation. SRM aims to reduce global warming by reflecting a small portion of sunlight (solar radiation) away from Earth and back into space. Although historically grouped together, these approaches differ substantially in mechanisms, timelines, and risk profiles, and are now typically discussed separately.IPCC (2022Chapter 1: Introduction and FramingiClimate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge Unive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klaus Lackner
Klaus S. Lackner is the Founding Director of the Center for Negative Carbon Emissions (CNCE) and a professor in School of Sustainable Engineering and the Built Environment at Arizona State University. He is scientific advisor to Carbon Collect Limited (name changed from Silicon Kingdom Holdings Limited in April 2021), and senior science advisor to Aircela Inc. He is a pioneer in carbon management and is the first to suggest capturing carbon dioxide from air in the context of addressing climate change. His works include demonstrating and improving passive methods to remove carbon dioxide from the atmosphere, integrating air capture technology with applications for using carbon dioxide, exploring safe and permanent disposal options for carbon dioxide, and identifying opportunities for automation and scaling. his publications have been cited 12771 times and his h-index is 53. Previously, he was the director of the Lenfest Center for Sustainable Energy at the Earth Institute. and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roger Revelle
Roger Randall Dougan Revelle (March 7, 1909 – July 15, 1991) was a scientist and scholar who was instrumental in the formative years of the University of California, San Diego, and was among the early scientists to study anthropogenic global warming, as well as the movement of Earth's tectonic plates. UC San Diego's first college is named Revelle College in his honor. Career Roger Revelle was born in Seattle to William Roger Revelle and Ella Dougan. He grew up in southern California. After graduating from Pomona College in 1929 with early studies in geology, he earned a PhD in oceanography from the University of California, Berkeley, in 1936. In 1931, he married Ellen Clark (1910-2009), a graduate of Pomona College in psychology. While at UC Berkeley, Roger studied under George Louderback and was initiated into Theta Tau Professional Engineering Fraternity, which started as a mining engineering fraternity and maintained a strong affinity for geology and geological enginee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'' is the peer review, peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. ''Science'' is based in Washington, D.C., United States, with a second office in Cambridge, UK. Contents The major focus of the journal is publishing important original scientific research and research reviews, but ''Science'' also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, ''Science'' and its rival ''Nature (journal), Nature'' cover the full range of List of academ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Hermann Bucher
Walter Hermann Bucher (March 12, 1888 – February 17, 1965) was a German- American geologist and paleontologist. He was born in Akron, Ohio, to Swiss-German parents. The family then returned to Germany, where he was raised. In 1911 he was awarded a Ph.D. by the University of Heidelberg with a focus on geology and paleontology. The same year he returned to the U.S. and joined the University of Cincinnati as a lecturer. By 1924 he was a professor of geology at the institution. His early works were on paleontology, and he performed studies of stromatolettia, oolites, and ripple-shaped markings. Later he concentrated on the Earth's crust diastrophism problem and proposed firstly (immediate and independent with Mikhail Tetyaev) the pulsation hypothesis of the Earth developing. In 1935 he became president of the Ohio Academy of Sciences. In 1940 he joined the Columbia University, specializing in structural geology. It is thought that at this time he worked as a consultant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maurice Ewing
William Maurice "Doc" Ewing (May 12, 1906 – May 4, 1974) was an American geophysicist and oceanographer. Ewing has been described as a pioneering geophysicist who worked on the research of seismic reflection and refraction in ocean basins, ocean bottom photography, submarine sound transmission (including the SOFAR channel), deep sea core samples of the ocean bottom, theory and observation of earthquake surface waves, fluidity of the Earth's core, generation and propagation of microseisms, submarine explosion seismology, marine gravity surveys, bathymetry and sedimentation, natural radioactivity of ocean waters and sediments, study of abyssal plains and submarine canyons. Biography He was born in Lockney, Texas, where he was the eldest surviving child of a large farm family. He won a scholarship to attend Rice University, earning a BA with honors in 1926. He completed his graduate studies at the same institution, earning an MA in 1927 and being awarded his PhD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Turekian
Karl Karekin Turekian (October 25, 1927 – March 15, 2013) was a geochemist and Sterling Professor at Yale University. During his career at Yale, he examined an uncommonly broad range of topics in planetary science — including the sediments of the deep seas, the hot springs of Yellowstone National Park, meteorite strikes, and the composition of Moon rocks. Awards and honors * Member of the National Academy of Sciences * Fellow of the American Academy of Arts and Sciences * V. M. Goldschmidt Award, The Geochemical Society, 1989 * Maurice Ewing Medal, American Geophysical Union The American Geophysical Union (AGU) is a 501(c)(3) nonprofit organization of Earth, Atmospheric science, atmospheric, Oceanography, ocean, Hydrology, hydrologic, Astronomy, space, and Planetary science, planetary scientists and enthusiasts that ..., 1997 References 1927 births 2013 deaths American geochemists Yale University faculty Yale Sterling Professors Presidents of the Geochemi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Werner Gast
Paul Werner Gast (September 11, 1930 – May 16, 1973) was an American geochemist and geologist. He was born in Chicago to German immigrants and attended Wheaton College, Illinois, whence he graduated in 1952. He earned a Ph.D. from Columbia University in 1957. After graduation, he taught at the University of Minnesota until 1965 when he became professor of geology at Columbia. In 1969 Paul Gast assumed leadership of the geo-science management of the Manned Spacecraft Center in preparation for Apollo mission sample return from the Moon. He served as chief scientist of the Apollo Lunar Science Staff. He was one of the science consultant group known unofficially as the " Four Horsemen," along with Jim Arnold, Bob Walker, and Gerry Wasserburg. He died at the age of 43, being survived by his wife, Joyce Rinehart, and two sons and a daughter. During his career he pioneered the study of rare earth elements in examining the crust, mantle, and interior of the planet. He led the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
