Landmarks in New York City like the World Trade Center and the Empire State Building were lit up in recent days in blue and yellow lights. So were other famous landmarks around the world, including the Eiffel Tower, the London Eye, the Colosseum in Rome and the Brandenburg Gate in Berlin.

What do you think these displays are saying? How do they relate to or comment on current events? What do you think of the message they are sending? Why?

Tell us in the comments, then read the related article to learn more.

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Students 13 and older in the United States and Britain, and 16 and older elsewhere, are invited to comment. All comments are moderated by the Learning Network staff, but please keep in mind that once your comment is accepted, it will be made public.