Denver Post: The global-warming bill that barely passed the House last month has found less hospitable terrain in the Senate. Democrats are 15 votes from the 60 they’ll need to end debate, and Thursday, Sen. Barbara Boxer, D-Calif., chairwoman of the Senate environment committee, said she was giving up on getting a bill out of committee this summer, a setback in what had been a breakneck schedule to pass a bill this year. Although Boxer vowed to stay “until Christmas” to get the job done, …