Already in 1986 the well known German news-magazine Der Spiegel published this image on it’s front page. It depicts the Dome of Cologne, one of the most important cultural heritage sites of Germany, partially flooded. The visual strategies of the media have not changed much in the last 35 years!
This is the same German magazine 10 years later.
I can’t say whether the change in motiv is due to a hightened awareness of the global interconnectedness of the issue or because Germany hosted the 1. UN Climate Change Conference that year.