Was is it really the hottest day ever?
7 Aug 2026, 08:36 GMT
Topic: Climate
Source URL: https://www.dw.com/en/was-is-it-really-the-hottest-day-ever/a-78264330?maca=en-rss-en-all-1573-rdf
Every time a new heat record is broken, skepticism follows. How do scientists know a day or a summer was really the hottest on record or that a heat wave was historic? DW has the answers.