Denver Post: The calamitous oil spill in the Gulf of Mexico has emerged in Washington, D.C., as an opportunity to push a recently introduced energy bill. During the past two weeks, President Obama has on several occasions urged the Senate to take up a climate change bill crafted by Sen. John Kerry, a Democrat of Massachusetts, and Sen. Joseph Lieberman, independent of Connecticut. Unfortunately, while the bill supports renewable-energy development, it does not include a renewable-energy …