How do you attend a Distant Climate Conference Without Flying was the question posed by Eric Worrall at wattsupwiththat. "Swedish climate messiah Greta Thunberg has a problem. She desperately wants to attend climate conferences in New York (September) and Santiago (December), but unlike most greens she is serious about avoiding air travel."
I have come up with a couple of solutions better than any I saw in the comments to the original article.
No carbon footprint at all really. The first method might take the rest of your life to get to New York. The second is almost certainly capable of making landfall in North America, somewhere. Good luck Greta!