Cape Argus: We are using 50 percent more resources than the Earth can sustainably produce, and unless we change course not even two planets will be enough to sustain mankind.
This is the message from Morne du Plessis, chief executive of WWF-SA, on Earth Overshoot Day.
This is the day of the year when people have used as much renewable natural resources as our planet can regenerate in one year.
The day was initiated by the Global Footprint Network, which uses ecological footprint data to measure what...