The Door into Summer is a science fiction novel by American writer Robert A. Heinlein, originally serialized in The Magazine of Fantasy & Science Fiction (October, November, December 1956, with covers and interior illustrations by Kelly Freas). It was published in hardcover in 1957. The novel is largely hard science fiction, but includes elements of fantasy and a romance.
Its title was triggered by a remark which Heinlein’s wife Virginia made when their cat refused to leave the house: “He’s looking for a door into summer.” Heinlein wrote the novel in 13 days.
The Anthropocene (/ænˈθrɒp.əˌsiːn, -ˈθrɒp.oʊ-/ann-THROP-ə-seen, -THROP-oh-) is a proposed geological epoch dating from the commencement of significant human impact on Earth’s geology and ecosystems, including, but not limited to, anthropogenic climate change.
Sir Joseph Rotblat (4 November 1908 – 31 August 2005) was a Polish physicist, a self-described “Pole with a British passport”. Rotblat worked on Tube Alloys and the Manhattan Project during World War II, but left the Los Alamos Laboratory after the war with Germany ended. His work on nuclear fallout was a major contribution toward the ratification of the 1963 Partial Nuclear Test Ban Treaty. A signatory of the 1955 Russell–Einstein Manifesto, he was secretary-general of the Pugwash Conferences on Science and World Affairs from their founding until 1973 and shared, with the Pugwash Conferences, the 1995 Nobel Peace Prize “for efforts to diminish the part played by nuclear arms in international affairs and, in the longer run, to eliminate such arms.”