Here are the climate-related sections of speeches by MPs during the Commons debate Rail 2020.
Full text: https://hansard.parliament.uk/Commons/2013-07-03/debates/13070366000002/Rail2020
18:04 Mr Jones
My hon. Friend makes a very good point. We also need to consider the multiplier effect of such a scheme, and the economic benefits to regions such as the north-east. There would be benefits in reduced journey times, and in the increased amount of freight on the railways. The climate change cost would also be reduced as we got freight off the roads, and the scheme could create regional expansion in areas such as County Durham.
[Source]