The climate faces tipping points that have the potential to be extremely serious for mankind. Pilita Clark (Opinion, May 25) advocates a precautionary approach, taking action now, rather than talking about it.

Stuart Kirk, the HSBC banker who accused policymakers of climate change hyperbole, vents about retired central bankers and poor economic forecasting, about “toast being toast” and about “nut jobs”. As a traveller on the spaceship we call Planet Earth, I know who I would like as captain.

Conor McCoole
Singapore