Trains are an often over-looked form of transportation in the US. But trains are actually one of the most fuel-efficient ways to travel — able to move a ton of freight over 400 miles on just one gallon of fuel. Here are just a few quick links on some cool train projects.

• German trains will be powered by renewable energy (and no cheating by using nuclear power…!) by 2050. “That’s not just a declaration of intent. It’s a concrete business target.” [url]
• This video demonstrates the ‘Moving Platforms’ concept — which lets train riders get on/off a moving train via a small transfer train. Prior art from the movies: riding up on a horse and jumping onto a moving train. [url]
• Russia is seriously thinking about building an underground rail line between Siberia and Alaska. If completed, this $65 billion project would create the longest underwater tunnel in the world. [url]
• To discover other interesting transportation-related content, check out what’s currently floating around the StumbleUpon universe. [url]  

By the way, StumbleUpon can recommend some good Techdirt articles, too.

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