If current trends continue, we will reach 3 Earths by the year It is a word that makes politicians wince, and is often described as the "elephant in the room" in discussions about the future of the planet. This is an encouraging sign that we can reverse the trend.
We do this, again, by drawing down resources that future generations and other species would otherwise use. This is because urbanites in low- and middle-income countries have historically consumed little.
But the world is changing. Adopting human-centered initiatives targeted at addressing both population growth and consumption habits, ranging from the individual to trans-national level, are our best hope for achieving a sustainable future.
According to this reasoning, creating a sustainable population is as much about boosting women's rights as it is about reducing consumption of resources.