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Click to Sign-In|Renew or Purchase Membership 2022-2023 The Osher Lifelong Learning Institute (OLLI) at Sierra College ispart of Sierra Colleges Continuing Education Division and belongs to a national network of 125 OLLIs established bythe Bernard Osher Foundation. OLLIs mission is to provide its membership of dedicated lifelong learners, ages 50 years or better, with a year-round curriculum of high-quality noncredit courses, as well as intellectually stimulating social, cultural, and volunteer opportunities. We offera wide variety of classes from academics to wellness,keeping minds and bodies active. While most of our coursesare still online via Zoom, we also haveon-ground coursesat both Roseville Vernon Center and the Grass Valley Campus. Interested in joining OLLI? Learn about Becoming a Member or Renew your Membershipfor August1, 2022 - July 31, 2023. Registering for a course?Information can be found on our registration page. OLLI at Sierra CollegeSpring 2023 Course Catalogs will be mailed to homes Friday, January6, 2023!OLLIs Spring 2023 Course Catalog Flipbook has just been released! Happy browsing friends. *No class:4/3 and 4/5 (Closed for Spring Break) No Photo URL:https://drive.google.com/uc?export=viewid=1kM-Y1vTl33DlBbDo0vSWYG7e7lNuaH4C The Legacy of Osher Institutes video from the conference welcome session...

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Welcome to the Osher Lifelong Learning Instituteat Sierra College Summer 2025Registration isOpen! Summer2025 Term Dates: (M) June16 - (Th) July 31 Fall 2025 Registration Opens: Tuesday, August 5th at 9am! Fall 2025 Term Dates: (M) August 25- (F) December 19 > Summer 2025 Term > Humanities

The Silent Threat NEW!

Forever chemicals are in the water supply and the air we breathe. We'll learn how PFAS came to be developed in the 1940s and found their way into a broad range of consumer products and what is being done to protect our health from this silent threat.

The Silent Threat (Online-Zoom)
Instructor: Dr. Kenneth Moore
Dates: 7/28/2025 - 7/28/2025
Days: M
Times: 10:00 AM - 11:00 AM
Sessions: 1
Fee: $5.00
Location: Online via Zoom
Recording: *This class is being recorded.
*Recordings will expire after 30 days.
Seats Available: 280 | Max Enroll: 299
SKU: SumCSCIE531

Forever chemicals are in the water supply and the air we breathe. We'll learn how PFAS came to be developed in the 1940s and found their way into a broad range of consumer products and what is being done to protect our health from this silent threat.

*Class Dates: 7/28 (only).

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