BBC Earth (Asia) - - Science -

Crime and ag­gres­sive be­hav­iour are of­ten noted to in­crease dur­ing heat­waves. This could be a phys­i­cal re­ac­tion to changes in, for ex­am­ple, heart rate and hor­mone lev­els, or it could be a psy­cho­log­i­cal re­ac­tion caused by dis­com­fort and stress; sci­en­tists are still try­ing to work it out. In 2014, how­ever, a study in the

Jour­nal Of En­vi­ron­men­tal Eco­nom­ics And Man­age­ment went one step fur­ther, pre­dict­ing that cli­mate change in the US will cause 22,000 more mur­ders, 180,000 more rapes and 1.2 mil­lion more ag­gra­vated as­saults be­tween 2010 and 2099. Re­searchers have even tied wars and the col­lapse of so­ci­eties such as the Mayans to cli­matic changes.

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