The Top Climate News for Saturday 5 July 2025:

- Octopus Energy sparks £10bn demerger of tech arm Kraken

- Ottawa announces funding for five Alberta carbon capture projects

- ‘A war of the truth’: Europe’s heatwaves are failing to spur support for climate action

- Canada races to build icebreakers amid melting ice and geopolitical tensions

- Millions of Octopus Energy customers urged to part with £300 for 'easy win'