claim: in a letter to The Times from Lord Krebs and company, essentially telling the newspaper to stop reporting less-than-negative climate stories.
evidence: The last time the Earth was 2 °C (3.6 °F) warmer than pre-industrial temperatures, sea levels were at least 5 metres (16 ft) higher than now: this was when warming because of changes in the amount of sunlight due to slow changes in the Earth's orbit caused the last interglacial.