There is no centralized system to monitor and report changes in the Earth’s life-support systems. So scientists in 77 nations have established the Group on Earth Observations (GEO) and the Group on Earth Observation Biodiversity Observation Network (GEO BON), which integrates existing data streams into one platform to provide a global warning system for Earth’s biological and social systems.
“The connections between nature and society are most complex and little is known about the tipping points of our socioecological systems,” says Kirsten Thonicke and some of her colleagues from the Potsdam Institute for Climate Impact Research (PIK).
The image below shows the urban sprawl of Mexico City. Every week humans create the equivalent of a city the size of Vancouver. In 2007, Earth's 6.8 billion humans were living 50 percent beyond the planet's threshold of sustainability. Even with modest UN projections for population growth, consumption and climate change, by 2030 humanity will need the capacity of two Earths to absorb CO2 waste and keep up with natural resource consumption, the World Wildlife Federation has warned.
The Daily Galaxy via www.earthobservations.org/ and www.pik-potsdam.de