Question: Thor Heyerdahl (Norwegian pronunciation: [tu:r 'haei@da:l]; October 6, 1914 - April 18, 2002) was a Norwegian adventurer and ethnographer with a background in zoology, botany, and geography. He became notable for his Kon-Tiki expedition in 1947, in which he sailed 8,000 km (5,000 mi) across the Pacific Ocean in a hand-built raft from South America to the Tuamotu Islands. The expedition was designed to demonstrate that ancient people could have made long sea voyages, creating contacts between separate cultures. This was linked to a diffusionist model of cultural development.

In 1947, Heyerdahl and five fellow adventurers sailed from Peru to the Tuamotu Islands, French Polynesia in a pae-pae raft that they had constructed from balsa wood and other native materials, christened the Kon-Tiki. The Kon-Tiki expedition was inspired by old reports and drawings made by the Spanish Conquistadors of Inca rafts, and by native legends and archaeological evidence suggesting contact between South America and Polynesia. The Kon-Tiki smashed into the reef at Raroia in the Tuamotus on August 7, 1947, after a 101-day, 4,300-nautical-mile (5,000-mile or 8,000 km) journey across the Pacific Ocean. Heyerdahl had nearly drowned at least twice in childhood and did not take easily to water; he said later that there were times in each of his raft voyages when he feared for his life.  Kon-Tiki demonstrated that it was possible for a primitive raft to sail the Pacific with relative ease and safety, especially to the west (with the trade winds). The raft proved to be highly manoeuvrable, and fish congregated between the nine balsa logs in such numbers that ancient sailors could have possibly relied on fish for hydration in the absence of other sources of fresh water. Other rafts have repeated the voyage, inspired by Kon-Tiki. Heyerdahl's book about The Kon-Tiki Expedition: By Raft Across the South Seas has been translated into 70 languages. The documentary film of the expedition entitled Kon-Tiki won an Academy Award in 1951. A dramatised version was released in 2012, also called Kon-Tiki, and was nominated for both the Best Foreign Language Oscar at the 85th Academy Awards and a Golden Globe Award for Best Foreign Language Film at the 70th Golden Globe Awards. It was the first time that a Norwegian film was nominated for both an Oscar and a Golden Globe.  Anthropologists continue to believe that Polynesia was settled from west to east, based on linguistic, physical, and genetic evidence, migration having begun from the Asian mainland. There are controversial indications, though, of some sort of South American/Polynesian contact, most notably in the fact that the South American sweet potato is served as a dietary staple throughout much of Polynesia. Blood samples taken in 1971 and 2008 from Easter Islanders without any European or other external descent were analysed in a 2011 study, which concluded that the evidence supported some aspects of Heyerdahl's hypothesis. This result has been questioned because of the possibility of contamination by South Americans after European contact with the islands. However, more recent DNA work (after Heyerdahl's death) contradicts the post-European-contact contamination hypothesis, finding the South American DNA sequences to be far older than that. Heyerdahl had attempted to counter the linguistic argument with the analogy that he would prefer to believe that African-Americans came from Africa, judging from their skin colour, and not from England, judging from their speech.

Using a quote from the above article, answer the following question: Did they find anything interesting once they arrived?
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Answer: Kon-Tiki demonstrated that it was possible for a primitive raft to sail the Pacific with relative ease and safety,

Problem: Alice Hamilton (February 27, 1869 - September 22, 1970) was an American physician, research scientist, and author who is best known as a leading expert in the field of occupational health and a pioneer in the field of industrial toxicology. She was also the first woman appointed to the faculty of Harvard University. Her scientific research focused on the study of occupational illnesses and the dangerous effects of industrial metals and chemical compounds. In addition to her scientific work, Hamilton was a social-welfare reformer, humanitarian, peace activist, and a resident-volunteer at Hull House in Chicago.

In January 1919 Hamilton accepted a position as assistant professor in a newly-formed Department of Industrial Medicine (and after 1925 the School of Public Health) at Harvard Medical School, making her the first woman appointed to the Harvard University faculty in any field. Her appointment was hailed by the New York Tribune with the headline: "A Woman on Harvard Faculty--The Last Citadel Has Fallen--The Sex Has Come Into Its Own". Her own comment was "Yes, I am the first woman on the Harvard faculty--but not the first one who should have been appointed!"  During her years at Harvard, from 1919 to her retirement in 1935, Hamilton never received a faculty promotion and held only a series of three-year appointments. At her request, the half-time appointments for which she taught one semester per year allowed her to continue her research and spend several months of each year at Hull House. Hamilton also faced discrimination as a woman. She was excluded from social activities, could not enter the Harvard Union, attend the Faculty Club, or receive a quota of football tickets. In addition, Hamilton was not allowed to march in the university's commencement ceremonies as the male faculty members did.  Hamilton became a successful fundraiser for Harvard as she continued to write and conduct research on the dangerous trades. In addition to publishing "landmark reports for the U.S. Department of Labor" on research related to workers in Arizona copper mines and stonecutters at Indiana's limestone quarries, Hamilton also wrote Industrial Poisons in the United States (1925), the first American textbook on the subject, and another related textbook, Industrial Toxicology (1934). At tetraethyl lead conference in Washington, D.C. in 1925, Hamilton was the most prominent critic of adding tetraethyl lead to gasoline.  Hamilton also remained an activist in social reform efforts. Her specific interests in civil liberties, peace, birth control, and protective labor legislation for women caused some of her critics to consider her a "radical" and a "subversive." From 1924 to 1930, she served as the only woman member of the League of Nations Health Committee. She also visited the Soviet Union in 1924 and Nazi Germany in April 1933. Hamilton wrote "The Youth Who Are Hitler's Strength," which was published in The New York Times. The article described Nazi exploitation of youth in the years between the two world wars. She also criticized the Nazi education, especially its domestic training for girls.

How long did she teach at Harvard?

Answer with quotes:
1919 to her retirement in 1935,