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Neptunium has also been used in detectors of high-energy neutrons. The longest-lived isotope of neptunium, neptunium-237, is a by-product of nuclear reactors and plutonium production. This isotope, and the isotope neptunium-239, are also found in trace amounts in uranium ores due to neutron capture reactions and beta decay. [7]
Edwin Mattison McMillan (September 18, 1907 – September 7, 1991) was an American physicist credited with being the first to produce a transuranium element, neptunium.For this, he shared the 1951 Nobel Prize in Chemistry with Glenn Seaborg.
Earth Day, which takes place on April 22, dates back to 1970, when U.S.-based organizers were hoping to bring awareness to the environmental degradation they were witnessing across the country.
Earth Day is an annual event on April 22 to demonstrate support for environmental protection.First held on April 22, 1970, it now includes a wide range of events coordinated globally by EARTHDAY.ORG (formerly Earth Day Network) [1] including 1 billion people in more than 193 countries.
A 2015 study estimated that there are roughly 3 trillion trees on earth, give or take a few million. Since there are around 8 billion people currently living on the planet, the math boils down to ...
He was a well-known advocate of science education and federal funding for pure research. Toward the end of the Eisenhower administration , he was the principal author of the Seaborg Report on academic science, and, as a member of President Ronald Reagan 's National Commission on Excellence in Education , he was a key contributor to its 1983 ...
The policy of issuing proclamations calling for the observance of special days or events is in 1 CFR Section 19.4, which allows for the responsibility for the preparation and presentation of proposed proclamations calling for the observance of special days, or events to the Director of Management and Budget to such agencies as deemed appropriate.
President Joe Biden marked Earth Day by announcing $7 billion in federal grants for residential solar projects serving 900,000-plus households in low- and middle-income communities — while ...