In 2018, the German Weather Service's meteorological training journal "Promet" showed a warming stripes graphic on the cover of the issue titled "Climate Communication". By September 2019, the Met Office, the U.K.'s national weather service, was using both a climate spiral and a warming stripe graphic on its "What is climate change?" webpage. Concurrently, the cover of the 21–27 September 2019 issue of "The Economist," dedicated to "The climate issue," showed a warming stripe graphic, as did the cover of "The Guardian" on the morning of the 20 September 2019 climate strikes. The environmental initiative Scientists for Future (2019) included warming stripes in its logo. The Science Information Service (Germany) noted in December 2019 that warming stripes were a "frequently used motif" in demonstrations by the School strike for the climate and Scientists for Future, and were also on the roof of the German Maritime Museum in Bremerhaven. Also in December 2019, Voilà Information Design said that warming stripes "have replaced the polar bear on a melting iceberg as the icon of the climate crisis". On 18 January 2020, a 20-metre-wide artistic light-show installation of warming stripes was opened at the Gendarmenmarkt in Berlin, with the Berlin-Brandenburg Academy of Sciences building being illuminated in the same way. The cover of the "Climate Issue" (fall 2020) of the Space Science and Engineering Center's "Through the Atmosphere" journal was a warming stripes graphic, and in June 2021 the WMO used warming stripes to "show climate change is here and now" in its statement that "2021 is a make-or-break year for climate action".