High speed rail is marketed as a sustainable alternative to air traffic. According to the International Union of Railways, the high speed train "plays a key role in a stage of sustainable development and combating climate change". As a regular long-distance train traveler in Europe, I have to say that the opposite is true. High speed rail is destroying the most valuable alternative to the airplane; the "low speed" rail network that has been in service for decades.
link to www.lowtechmagazine.com