Calgary Herald: Nebraska farmer Jim Tarnick vows to fight the Keystone XL pipeline to the finish because he believes its approval will be the death of his farm. It's a battle Tarnick says he can't afford to lose. "I will carry it on to the end," the 38-year-old farmer said Friday. "They will really have to take my land from me." If approved by United States President Barack Obama later this year, the Keystone XL pipeline will carry up to 830,000 barrels per day of oil-sands bitumen from Alberta and across Tarnick's...