| Date | Title | Description | Presenter |
| 19 Mar 2024 | Using AI to fight climate change recording, AI slides | How AI can and is already being used | Ian Hawker |
| 18 Jan 2024 | The Grid pt 1 / The Grid pt 2 | A Subject Adviser struggles to understand the UK electricity industry: presented to Croydon u3a Climate Group | John Baxter |
| 15 Dec 2023 | Climate change and the ocean recording, Oceans slides | - | Ian Hawker |
| 16 Nov 2023 | The Colours of Hydrogen | Hydrogen in a net-zero energy economy: presented to Croydon u3a Climate and Science Groups | John Baxter |
| 19 Sept 2023 | Climate modelling recording, Climate modelling slides | Predicting the effects of climate change | Ian Hawker |
| 26 June 2023 | Climate change - Adaptation recording, Adaptation slides | Actions the world needs to take to adapt to climate change | Ian Hawker |
| 2 May 2023 | Geo-engineering recording, Geo-engineering slides | - | Ian Hawker |
| 26 April 2023 | Launch of Intergenerational Dialogue | Joint presentation with Warwick students | Brenda Ainsley |
| 31 March 2023 | Sustainability | From a Study Day at Barnet u3a. The talk covers the Sustainable Development Goals, world population, food, and GDP, Planetary Boundaries, and the role of the individual. | John Baxter |
| 10 March 2023 | The Climate Crisis and some solutions | The science behind the climate crisis | Brenda Ainsley |
| 1 March 2023 | A narrow path from the brink | An insight from physicist, climate change activist and petroleum and renewables engineer | Erik Dalhuijsen | |
| January 2023 | Climate Change & Biodiversity recording; Biodiversity slides | Highlights from COP 15 | Ian Hawker | |
| November 2022 | Climate Change & Tipping Point recording; Tipping Point slides | Importance of tipping points | Ian Hawker |
| June 2022 | Recording - What will it really take to deal with the Climate Emergency; Slides MBS | There is no planet B | Mike Berners-Lee | |
| May 2022 | Recording - How to reduce your carbon footprint and your energy bills; Panel slides | U3a members formed a panel and talked about their experiences of a) improving their insulation, b) installing a heat pump, c) fitting solar panels and d) buying an e-bike | a) Kate Bailey 02.30, b) Nick Ward 15.00, c) John Ainsley 28.00, d) Clive Teague 41.50 | |
