<prompt> Translate the following text to EnglishKulikuwa na mwelekeo wa joto kutoka miaka ya 1890 hadi miaka ya 1940, baridi kutoka miaka ya 1940 hadi miaka ya 1970, na kisha kuongezeka kwa joto kutoka miaka ya 1970 hadi leo.  <response>: There was a warming trend from the 1890s to the 1940s, cooling from the 1940s to the 1970s, and then sharply rising temperatures from the 1970s to today. 