- Robert Francis Kennedy Jr. (born January 17, 1954), also known by his initials RFK Jr., is an American politician, environmental lawyer, anti-vaccine activist and conspiracy theorist whom President-elect Donald Trump has nominated to serve as United States secretary of health and human services. Kennedy is the chairman and founder of Children’s Health Defense, an anti-vaccine advocacy group and proponent of COVID-19 vaccine misinformation. He was on the ballot in some states as an independent candidate in the 2024 United States presidential election. A member of the Kennedy family, he is a son of United States Attorney General and senator Robert F. Kennedy, and a nephew of U.S. president John F. Kennedy and senator Ted Kennedy.
- Silurian (Wikipedia)
The Silurian (/sɪˈljʊəriːən, saɪ-/ sih-LURE-ee-ən, sy-) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago (Mya), to the beginning of the Devonian Period, 419.2 Mya. The Silurian is the shortest period of the Paleozoic Era. As with other geologic periods, the rock beds that define the period’s start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out.