Earth system

earth system

Have you heard this term?

The Earth we live on is a complex system of interacting physical, chemical and biological processes. The Earth system can be understood as a set of interlinking and interacting “spheres”. The atmosphere, hydrosphere, biosphere and geosphere (or lithosphere) form the simplest collection, though some would add the cryosphere as a special element dealing with polar regions and processes, and others would add the anthroposphere emphasizing human dimensions and impact on the planet. [1] This system includes the planet’s many natural cycles (e.g. carbon, water, nitrogen, oxygen, phosphorus, sulphur etc.) that support life. [2] Continue reading


GROUND Water scarcity

This is a LONG post. It’s an BIG issue.

Nearly 20 years after the World Bank began warning of a looming water crisis, the combination of a surging population, a growing global middle class and a changiwater scarcityng climate is straining water supplies

“Humankind is running out of water at an alarming pace,” Peter Brabeck, chairman of Nestlé, says. “We’re going to run out of water long before we run out of oil.” Continue reading