Japanese collectors spent billions on European paintings during the bubble economy of the 1980s. Officials today hope to inspire a new generation of art lovers.

The organization said that more than 90 important sites on the moon could risk destruction if space tourism is left unregulated.

A show by the artist Isabelle Brourman, who sketched the trials of Donald J. Trump, attracted figures from the art world, the media and some lawyers from his civil fraud trial.

Artists who lived and worked in Altadena and the Pacific Palisades are worrying about irreplaceable losses, and their livelihoods.