context1: His dedication to the institution led to his election as <strong>president</strong> for the 1958-9 session. In 1946 he introduced concrete and soil mechanics lecturers to the staff of Imperial College for the first time. In 1951 he was appointed by Hugh Dalton, the Minister of Local Government and Planning, to investigate <strong>pollution</strong> in the Thames tideway.
context2: They started by passing around a petition asking Congress to censure <strong>President</strong> Clinton and move on, as opposed to impeaching him. The petition, passed around by word of mouth, was extremely successful; ultimately, they had half a million signatures. The couple went on to start similar campaigns calling for, arms inspections rather than an invasion of Iraq, reinstatement of lower limits on arsenic and mercury <strong>pollution</strong>, and campaign finance reform.