Verge: Four moderate Republican senators have just joined forces to encourage their party to think critically about climate change, Politico reports. Kelly Ayotte (R-NH), Lamar Alexander (R-TN), Mark Kirk (R-IL), and Lindsey Graham (R-SC) created an "informal coalition" to work against what they believe is an unsustainable GOP outlook on environmental policy. All four senators have previously gone on record with the belief that human activity causes climate change, a scientifically backed notion that most...