Associated Press: Environmental groups hailed President Barack Obama's warning about climate change, but said the president's words will soon be tested as he decides whether to approve the Keystone XL oil pipeline from Canada to the Gulf Coast.
Obama pledged in his inaugural speech on Monday to respond to what he called the threat of climate change, saying that ``failure to do so would betray our children and future generations.''
By singling out climate change, Obama indicated a willingness to take on an issue...