Two degrees: How the world failed on climate change. Vox

US puts off decision on Keystone XL pipeline. Associated Press

US GHG emissions at lowest level in 20 years. Climate Central

A brutal allergy season is ahead. blame the polar vortex. Mother Jones

EPA drastically underestimates methane released at drilling sites. Los Angeles Times

IPCC: Mitigating climate change more challenging than ever. ScienceInsider