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Wallace 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
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_type2 = Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook and DuPage , established_title = Settled , established_date = , established_title2 = Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council , governing_body = Chicago City Council , leader_title = Mayor , leader_name = Lori Lightfoot ( D) , leader_title1 = City Clerk , leader_name1 = Anna Valencia ( D) , unit_pref = Imperial , area_footnotes = , area_tot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermohaline Circulation
Thermohaline circulation (THC) is a part of the large-scale ocean circulation that is driven by global density gradients created by surface heat and freshwater fluxes. The adjective ''thermohaline'' derives from '' thermo-'' referring to temperature and ' referring to salt content, factors which together determine the density of sea water. Wind-driven surface currents (such as the Gulf Stream) travel polewards from the equatorial Atlantic Ocean, cooling en route, and eventually sinking at high latitudes (forming North Atlantic Deep Water). This dense water then flows into the ocean basins. While the bulk of it upwells in the Southern Ocean, the oldest waters (with a transit time of about 1000 years) upwell in the North Pacific. Extensive mixing therefore takes place between the ocean basins, reducing differences between them and making the Earth's oceans a global system. The water in these circuits transport both energy (in the form of heat) and mass (dissolved solids and ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Crisis
''Climate crisis'' is a term describing global warming and climate change, and their impacts. The term and the alternative term ''climate emergency'' have been used to describe the threat of global warming to humanity (and their planet), and to urge aggressive climate change mitigation. In the scientific journal ''BioScience'', a January 2020 article, endorsed by over 11,000 scientists worldwide, stated that "the climate crisis has arrived" and that an "immense increase of scale in endeavors to conserve our biosphere is needed to avoid untold suffering due to the climate crisis." The term is applied 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 that, much as "global warming" drew out more emotional engagement and support for action than "climate change", calling climate change a crisis could have a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Failure
Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome, a group of signs and symptoms caused by an impairment of the heart's blood pumping function. Symptoms typically include shortness of breath, excessive fatigue, and leg swelling. The shortness of breath may occur with exertion or while lying down, and may wake people up during the night. Chest pain, including angina, is not usually caused by heart failure, but may occur if the heart failure was caused by a heart attack. The severity of the heart failure is measured by the severity of symptoms during exercise. Other conditions that may 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, high blood pressure, atrial fibrillation, valvular heart disease, excessive alcohol consumption, infection, and cardiomyopathy. These cause heart failure by altering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Engineering
Climate engineering (also called geoengineering) is a term used for both carbon dioxide removal (CDR) and solar radiation management (SRM), also called solar geoengineering, when applied at a planetary scale.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 University Press, Cambridge, United Kingdom and New York, NY, USA However, they have very different geophysical characteristics which is why the IPCC ( Intergovernmental Panel on Climate Change) no longer uses this overarching term.IPCC, 2021Annex VII: Glossary atthews, J.B.R., V. Möller, R. van Diemen, J.S. Fuglestvedt, V. Masson-Delmotte, C. Méndez, S. Semenov, A. Reisinger (eds.) IClimate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change[Masson-Delmo ... [...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 Arizona State University (Arizona State or ASU) is a public research university in the Phoenix metropolitan area. Founded in 1885 by the 13th Arizona Territorial Legislature, ASU is one of the largest public universities by enrollment in the .... 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 ... [...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. While at Cal, he 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 engineering students. Much of his early work in oceanography took place at the Scripps Institution of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'', also widely referred to as ''Science Magazine'', is the 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'' c ... [...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 in 1 ... [...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 The Geochemical Society is a nonprofit scientific organization founded to encourage the application of chemistry to solve problems involving geology and cosmology. The society promotes understanding of geochemistry through the annual Goldschmidt Co ..., 1989 * Maurice Ewing Medal, American Geophysical Union, 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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
