Associated Press: Environmental groups hailed President Barack Obama's warning about climate change in his second inauguration speech, but said the president's words will soon be tested as he decides whether to approve the Keystone XL oil pipeline from Canada.
Obama pledged Monday to respond to what he called ''the threat of climate change,'' saying the failure to do so would be a betrayal of the nation's children and future generations.
''Some may still deny the overwhelming judgment of science'' that global...