INFRASTRUCTURE: Climate change could cause more train derailments with 'sun kinks' Published: Friday, May 30, 2014 As U.S. temperatures soar, so will the prevalence of "sun kinks," or railways that bend and buckle under extreme heat. Please subscribe to ClimateWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.