Agence France-Presse: Former US president Bill Clinton said Thursday that Congress must pass a “strong” climate change bill if it hopes to persuade China and India to sign up to a new deal on tackling global warming. In an interview with the Financial Times in London, Clinton said legislation must be passed before a global summit in Copenhagen in December to agree on a successor to the Kyoto treaty on cutting greenhouse gas emissions. “First of all, if we don’t adopt a workable but a strong bill …