BERLIN (AP) — Climate activist Greta Thunberg and Germany's national railway company created a tweetstorm Sunday after she posted a photo of herself sitting on the floor of a train surrounded by lots of bags.

The image has drawn plenty of comment online about the performance of German railways.

Thunberg posted the tweet late Saturday with the comment "traveling on overcrowded trains through Germany. And I'm finally on my way home!"

But German railway company Deutsche Bahn suggested that Thunberg may not have spent the whole time sitting on the floor. And the 16-year-old Swedish activist later...