What are the low-carbon alternatives for long-distance travel?<p>For overland travel, I guess we already know the answer: High speed electric trains and electric cars &#x2F; buses (which will eventually become self-driving), with the power being generated by renewables&#x2F;nuclear.<p>For travelling over oceans, it&#x27;s much more difficult. Are there any realistic concepts out there? A new generation of sailing ships?<p>It&#x27;s really disappointing to see the lack of political leadership on this stuff. Nobody in politics is saying: &quot;we&#x27;re going to have to stop flying one day, it might be a good idea to start funding the alternatives&quot;