In 1907, the newly established Board of Education found that greater capacity for higher technical education was needed and a proposal to merge the City and Guilds College, the Royal School of Mines and the Royal College of Science was approved and passed, creating The Imperial College of Science and Technology as a constituent college of the University of London. Imperial's Royal Charter, granted by Edward VII, was officially signed on 8 July 1907. The main campus of Imperial College was constructed beside the buildings of the Imperial Institute in South Kensington.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When was the charter signed for the University of London?
Ah, so.. unanswerable

General Electric heavily contaminated the Hudson River with polychlorinated biphenyls (PCBs) between 1947-77. This pollution caused a range of harmful effects to wildlife and people who eat fish from the river or drink the water. In response to this contamination, activists protested in various ways. Musician Pete Seeger founded the Hudson River Sloop Clearwater and the Clearwater Festival to draw attention to the problem. The activism led to the site being designated by the EPA as one of the superfund sites requiring extensive cleanup. Other sources of pollution, including mercury contamination and sewage dumping, have also contributed to problems in the Hudson River watershed.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What designation did the EPA give to the site of GE's Hudson River pollution
Ah, so.. superfund

Electric railways use electric locomotives to haul passengers or freight in separate cars or electric multiple units, passenger cars with their own motors. Electricity is typically generated in large and relatively efficient generating stations, transmitted to the railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines but most purchase power from an electric utility. The railway usually provides its own distribution lines, switches and transformers.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Very few purchase power from whom?
Ah, so..
unanswerable