One of the many things Christine is involved with is cleaning up the ocean via Ghost Fishing https://www.ghostfishing.co.uk/ which she talks about for Earth Day 

https://www.bbc.co.uk/sounds/play/m000v99v

Christine is also in the 2020 Woman's Hour Power List https://www.bbc.co.uk/programmes/articles/5f6X3JsVjcGXfXstdbYxhkk/womans-hour-power-list-2020-the-list 

She also mentions the Good fish guide as one thing we can do to help the planet. https://www.mcsuk.org/goodfishguide/search