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The United Nations weather
has warned that extreme temperatures are "the new
". Scientists say climate change is making heatwaves longer, hotter and more
. Many countries have been experiencing
hot weather in the
week. In parts of the USA and China, the
went over 50ºC (122ºF). In Death Valley, California, it was 53.9ºC; and in Xinjiang, China, it got up to 52.2ºC. In Spain and Italy, the
rose to 46ºC. Many European countries and Japan have issued heat
. They advised people to stay in the
and drink plenty of water. The U.N. weather agency has warned Europe's
could continue for another month.