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Welcome to U3ACommunities

U3ACommunities is a free on-line platform for enquiring minds. It hosts a number of subject based groups who meet on-line monthly. It is independent of the Third Age Trust.

Whilst most of our members are beyond the age of retirement, we do allow anyone to join.

Use the GROUPS menu above to browse the groups and SUBSCRIBE to join one or more groups – you’ll then be emailed about new meetings and other posts. Both subscribing and attending meetings are free.

Individual groups may allow commenting on pages for any post-meeting follow-ups or discussions. The previously offered discussion forum has been disabled due to lack of use.

Why not join the fediverse u3a.social for discussions ?



Upcoming Online Meetings

Agentic Artificial Intelligence

19th May @ 3:00pm – 5:00pm This month we’ll look at agentic artificial intelligence ... large language models are now no-longer contrained to just "chat", they can now interface to[...]

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19 May 2026 3:00 pm - 5:00 pm

Current Affairs discussion group: Open Forum

With so much going on at the moment, both domestically and around the world, it's time once again to open the floor to all of you - our members -[...]

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21 May 2026 10:30 am - 11:30 am

From Concept to Reality: Space‑Based Solar Power Today

Speaker: Martin Soltau Co‑CEO, Space Solar Space‑based solar power (SBSP) is no longer a distant dream—it’s becoming a credible pillar of future clean‑energy systems. By harvesting sunlight in orbit, where[...]

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25 May 2026 5:00 pm - 6:30 pm