During the 1970s, humanity as a whole passed the point at which the annual Ecological Footprint matched the Earth’s annual biocapacity
. This situation is called “ecological overshoot
”, and has continued since then.
An overshoot of 50% means it would take 1.5 years for the Earth to regenerate the renewable resources that people used in 2008 and absorb CO2
Put another way, people used the equivalent of 1.5 planets to support their activities.
and other greenhouse gas emissions from human activities are far more than ecosystems can absorb.