Global warm­ing caused ex­tinc­tion

The Press and Journal (Moray) - - NEWS -

Ex­treme global warm­ing left ocean an­i­mals un­able to breathe, caus­ing the big­gest mass ex­tinc­tion in the Earth’s his­tory, re­search has shown. The ex­tinc­tion event 252 mil­lion years ago wiped out 96% of all ma­rine species and 70% of land-dwelling ver­te­brates.

Sci­en­tists have linked what has be­come known as the Great Dy­ing with a se­ries of mas­sive vol­canic erup­tions fill­ing the at­mos­phere with green­house gas.

The new study, re­ported in the jour­nal Sci­ence, sug­gests that as tem­per­a­tures soared, the wa­ter could not hold enough oxy­gen for most ma­rine crea­tures to sur­vive.

The sci­en­tists warned that if green­house gas emis­sions con­tinue, ocean warm­ing could reach 20% of the level ex­pe­ri­enced in the late Per­mian by 2100 and be­tween 35% and 50% of the Great Dy­ing ex­treme by the year 2300.

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