April 30, 1991: Drought Cartoon. The Los Angeles Times has published cartoons over more than 100 years that depict the many droughts that California has suffered and the reactions to them. Here is one that I think you will enjoy.
April 30, 1847: William Ripley Nichols is born.“William Ripley Nichols (April 30, 1847 – July 14, 1886) was a noted American chemist [only 39 years old at his death]. Nichols was born in Boston, Massachusetts, graduated from the Massachusetts Institute of Technology in 1869, and served there as instructor and assistant professor until 1872, when he was elected professor of general chemistry, which chair he retained until his death in Hamburg, Germany. Professor Nichols was recognized as an authority on sanitation, and particularly on water purification, published numerous papers on municipal water supplies, and was active in the pioneering work of the Lawrence Experiment Station. He was a member of the American Academy of Arts and Sciences, the American Association for the Advancement of Science, of which he was Vice President in 1885, and of the German Chemical Society.”
Nichols was also a mentor to Ellen Swallow Richardsat MIT. “In 1887, the laboratory, directed by Thomas Messinger Drown, conducted a study under Richards of water quality in Massachusetts for the Massachusetts State Board of Health involving over 20,000 samples, the first such study in America. Her data was used to find causes of pollution and improper sewage disposal. As a result, Massachusetts established the first water-quality standards in America and its first modern sewage treatment plant at Lowell, Massachusetts.”