Problem: Background: Amos Bronson Alcott (; November 29, 1799 - March 4, 1888) was an American teacher, writer, philosopher, and reformer. As an educator, Alcott pioneered new ways of interacting with young students, focusing on a conversational style, and avoided traditional punishment. He hoped to perfect the human spirit and, to that end, advocated a vegan diet before the term was coined.
Context: Alcott's published books, all from late in his life, include Tablets (1868), Concord Days (1872), New Connecticut (1881), and Sonnets and Canzonets (1882). Louisa May attended to her father's needs in his final years. She purchased a house for her sister Anna which had been the last home of Henry David Thoreau, now known as the Thoreau-Alcott House. Louisa and her parents moved in with Anna as well.  After the death of his wife Abby May on November 25, 1877, Alcott never returned to Orchard House, too heartbroken to live there. He and Louisa May collaborated on a memoir and went over her papers, letters, and journals. "My heart bleeds with the memories of those days", he wrote, "and even long years, of cheerless anxiety and hopeless dependence." Louisa noted her father had become "restless with his anchor gone". They gave up on the memoir project and Louisa burned many of her mother's papers.  On January 19, 1879, Alcott and Franklin Benjamin Sanborn wrote a prospectus for a new school which they distributed to potentially interested people throughout the country. The result was the Concord School of Philosophy and Literature, which held its first session in 1879 in Alcott's study in the Orchard House. In 1880 the school moved to the Hillside Chapel, a building next to the house, where he held conversations and, over the course of successive summers, as he entered his eighties, invited others to give lectures on themes in philosophy, religion and letters. The school, considered one of the first formal adult education centers in America, was also attended by foreign scholars. It continued for nine years.  In April 1882, Alcott's friend and benefactor Ralph Waldo Emerson was sick and bedridden. After visiting him, Alcott wrote, "Concord will be shorn of its human splendor when he withdraws behind the cloud." Emerson died the next day. Alcott himself moved out of Concord for his final years, settling at 10 Louisburg Square in Boston beginning in 1885.  As he was bedridden at the end of his life, Alcott's daughter Louisa May came to visit him at Louisburg on March 1, 1888. He said to her, "I am going up. Come with me." She responded, "I wish I could." He died three days later on March 4; Louisa May died only two days after her father.
Question: Did he write after that?
Answer: On January 19, 1879, Alcott and Franklin Benjamin Sanborn wrote a prospectus for a new school

Problem: Background: 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."
Context: While still in Poland, Rotblat had realised that nuclear fission might possibly be used to produce an atomic bomb. He first thought that he should "put the whole thing out of my mind", but he continued because he thought the only way to prevent Nazi Germany from using a nuclear bomb was if Britain had one to act as a deterrent. He worked with Chadwick on Tube Alloys, the British atomic bomb project.  In February 1944, Rotblat joined the Los Alamos Laboratory as part of Chadwick's British Mission to the Manhattan Project. The usual condition for people to work on the Manhattan Project was that they had to become US citizens or British subjects. Rotblat declined, and the condition was waived. At Los Alamos, he was befriended by Stan Ulam, a fellow Polish-Jewish scientist, with whom he was able to converse in Polish. Rotblat worked in Egon Bretscher's group, investigating whether high-energy gamma rays produced by nuclear fission would interfere with the nuclear chain reaction process, and then with Robert R. Wilson's cyclotron group.  Rotblat continued to have strong reservations about the use of science to develop such a devastating weapon. In 1985 he related that at a private dinner at the Chadwicks' house at Los Alamos in March 1944, he was shocked to hear the director of the Manhattan Project, Major General Leslie R. Groves, Jr., say words to the effect that the real purpose in making the bomb was to subdue the Soviets. Historians, notably Barton Bernstein, have cast doubt on this story.  By the end of 1944 it was also apparent that Germany had abandoned the development of its own bomb and Rotblat asked to leave the project. Chadwick was then shown a security dossier in which Rotblat was accused of being a Soviet spy and that, having learned to fly at Los Alamos, he was suspected of wanting to join the Royal Air Force so that he could fly to Poland and defect to the Soviet Union. In addition, he was accused of visiting someone in Santa Fe and leaving them a blank cheque to finance the formation of a communist cell.  Rotblat was able to show that much of the information within the dossier had been fabricated. In addition, FBI records show that in 1950, Rotblat's friend in Santa Fe was tracked down in California, and she flatly denied the story; the cheque had never been cashed and had been left to pay for items not available in the UK during the war. In 1985, Rotblat recounted how a box containing "all my documents" went missing on a train ride from Washington D.C. to New York as he was leaving the country, but the presence of large numbers of Rotblat's personal papers from Los Alamos now archived at the Churchill Archives Centre "is totally at odds with Rotblat's account of events". Due to suspicions that he was a Soviet spy, Rotblat was not permitted to re-enter the United States until 1964.
Question: Did he work on this with other people?
Answer:
Rotblat joined the Los Alamos Laboratory as part of Chadwick's British Mission to the Manhattan Project.