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DDT was first synthesized in 1874 by the Austrian chemist Othmar Zeidler. DDT's insecticidal action was discovered by the Swiss chemist Paul Hermann Müller in 1939. DDT was used in the second half of World War II to limit the spread of the insect-borne diseases malaria and typhus among civilians and troops.
Silent Spring is an environmental science book by Rachel Carson. [1] Published on September 27, 1962, the book documented the environmental harm caused by the indiscriminate use of DDT, a pesticide used by soldiers during World War II.
J. Gordon Edwards (August 24, 1919 – July 19, 2004) was an American entomologist and proponent of the use and safety of the pesticide DDT.He was professor of entomology at San Jose State University for 40 years, and namesake to the university's entomology museum.
Significant amounts of DDT-related compounds continue to accumulate in California condors and local dolphin populations, and a recent study linked the presence of this once-popular pesticide to an ...
This is a list of invasive species in North America.A species is regarded as invasive if it has been introduced by human action to a location, area, or region where it did not previously occur naturally (i.e., is not a native species), becomes capable of establishing a breeding population in the new location without further intervention by humans, and becomes a pest in the new location ...
A mobile game named Paw Patrol Academy was officially made and released in late 2023. The co-founder describes the game as the franchise's "first educational app". As of November 2023, it is one of the top 5 apps for kids 5 and under in the app store. [104] [105] Paw Patrol Academy has been awarded Google Play's Best of 2023 App for Families.
Paw Patrol is a Canadian animated television series created by Keith Chapman. It is produced by Spin Master Entertainment, with animation provided by Guru Studio. In Canada, the series is primarily broadcast on TVOntario, which first ran previews of the show in August 2013. The series premiered on Nickelodeon in the United States on August 12 ...
The boll weevil (Anthonomus grandis) is a species of beetle in the family Curculionidae.The boll weevil feeds on cotton buds and flowers. Thought to be native to Central Mexico, [1] it migrated into the United States from Mexico in the late 19th century and had infested all U.S. cotton-growing areas by the 1920s, devastating the industry and the people working in the American South.