  While the global-average temperatures are rapidly rising, more researchers
have been shifting their focus towards the past mass-extinction events in order
to show the relations between temperature increase and temperature thresholds
which might trigger extinction of species. These temperature and
mass-extinction relation graphs are found practical by conservationists and
policy makers to determine temperature threshold values to set climate targets.
Unfortunately, this approach might be dangerous, because mass-extinction events
(MEEs) are related to many environmental parameters and temperature is only one
of them. Herein we provide a more comprehensive evaluation of the environmental
thresholds required to sustain a habitable planet. Besides, we suggest actions
within the sustainable-development goals (SDGs) to observe those critical
environmental parameters, in order to assure having an inhabitable planet for
the current living species.
