A law professor who actually read the fine print in Sacramento. Rare breed. California's clean air and water exist because he wouldn't let the lobbyists slide through the details.
Their story
Byron D. Sher was an American lawyer, Stanford Law School professor and Democratic California legislator who became one of the state's most consequential environmental lawmakers. Soft-spoken and allergic to the press-release style of modern politics, he nonetheless authored statutes that reshaped California's air, water, waste and climate policy, and that…
Byron D. Sher was an American lawyer, Stanford Law School professor and Democratic California legislator who became one of the state's most consequential environmental lawmakers. Soft-spoken and allergic to the press-release style of modern politics, he nonetheless authored statutes that reshaped California's air, water, waste and climate policy, and that later influenced national debates.
Born in St. Louis, Missouri, on 7 February 1928, Sher earned a bachelor's degree from Washington University and a law degree from Harvard Law School in 1952. After teaching at Harvard, Southern Methodist University and the University of Southern California, and working as a Fulbright research scholar, he joined the Stanford Law School faculty in 1957. In Palo Alto he taught contracts, commercial law, consumer protection and legislation, and began a second life in local politics during fights over freeway expansion and growth.
Sher joined the Palo Alto City Council in 1965 as part of the city's early "residentialist" coalition for slow growth and open-space protection. Recalled with colleagues in a bitter 1967 election, he returned to the council from 1973 to 1980 and served as mayor in 1975 and 1978. He helped negotiate the city's purchase of more than 500 acres in the foothills that became part of the Enid Pearson Arastradero Preserve, and worked on Palo Alto's first Comprehensive Plan. Colleagues later called him a premature environmentalist who paid a political price before his ideas went mainstream.
Elected to the California State Assembly in 1980, Sher chaired the Natural Resources Committee for years and moved to the State Senate in a 1996 special election, serving until term limits ended his legislative career in 2004. His bill list reads like a syllabus of modern California environmental law: the Groundwater Protection Act (1983), the California Clean Air Act (1988), the California Safe Drinking Water Act (1989), early greenhouse-gas inventory legislation that put "global warming" into state statute, wild and scenic river protections, electronic-waste and underground-storage-tank rules, and recycling and green-marketing standards. He helped drive the Headwaters Forest purchase that conserved ancient redwoods in Humboldt County and pushed renewable-energy requirements into electricity restructuring debates.
Republicans who signed his bills, including Governor George Deukmejian, described a legislator of unusual personal integrity. Democrats nicknamed Grizzlies admired his habit of reading bills for special-interest traps; he was among the few who voted against a 1986 shrimp-processing measure later exposed as part of an FBI corruption sting. He rarely sought the spotlight. "He wasn't a comfortable politician," former colleague Jackie Speier recalled. "He didn't speak up a lot. So, when he did, people listened."
After leaving Sacramento, Sher and his family settled on a pear orchard near Placerville in the Sierra Nevada foothills. He continued public service on the Sierra Nevada Conservancy Board and the Tahoe Regional Planning Agency. The San Mateo County Board of Supervisors had already proclaimed 30 January 2004 "Byron Sher Day," calling him arguably the state's most effective environmental legislator. The California League of Conservation Voters named its lifetime environmental leadership award after him.
Sher was married for 62 years to Linda Bowser Sher, an artist and political partner who died in 2014. He is survived by their children Adrienne, Benjamin and Katherine, five grandchildren and a great-granddaughter. He died at his ranch near Placerville on Saturday, 12 September 2026, at the age of 98. Family and obituaries asked memorial gifts for the International Rescue Committee. Across California politics, the quiet professor who preferred substance to spectacle was remembered as the author of laws that still shape the air Californians breathe and the rivers they protect.
Biography adapted from Los Angeles Times; Palo Alto Online; The Almanac; Wikipedia (CC BY-SA 4.0) and sources cited on this page.
In their own words
“The heat is on. The state can either ignore what science is telling us, or we can respond to this challenge in a responsible way.”
Quoted by the Sacramento Bee on 5 May 1989, speaking about global warming legislation.
“It was the best purchase the city ever made.”
On Palo Alto's foothills open-space purchase, speaking to The Almanac in 2004.
“He deserved it.”
Deadpan reply when asked whether it was true he had given William Newsom a C at Stanford Law, recalled at a 2010 conservation banquet.
“He wasn't a comfortable politician. He didn't speak up a lot. So, when he did, people listened.”
Jackie Speier, former colleague, quoted in the Los Angeles Times obituary.
“Arguably the most effective environmental legislator in the state.”
San Mateo County Board of Supervisors proclamation establishing Byron Sher Day, 2004.

From social media
5Posts by Byron, and posts about them, kept here so they are not lost.