Mexico joins a long list of our allies to pass climate legislation:
"Mexican President Felipe Calderon has signed a law introducing binding targets on climate change."
"Mr Calderon said on Twitter that the law would make Mexico the "first developing country with integral legislation against climate change".
"The law, which sets targets on reducing greenhouse gas emissions and increasing the use of renewable energy, is only the second of its kind in the world."
"The measures had been passed by the Senate in April by 78 votes to nil."