Tying past mass extinctions with low atmospheric CO2 is false
NewswiseAttempts to discredit human-caused climate change by touting graphs of prehistoric atmospheric carbon dioxide and temperature changes are not something new. Peter Clack has once again tried to make a point that current atmospheric carbon dioxide levels are comparatively low compared to past eras. But just because we're in an advantageous era compared to past eras, it does not negate the cause for alarm concerning our current warming trend.