But, in the last 20 years there has been an enormous international research effort to understand global change and the Earth system.

Given the choices, she decided to stay in the Earth solar system.

How do you plan to get out of Earth system alive?

We don't even have enough to make the hyperspace-fold to the Earth system.

The earth system: physical and chemical dimensions of global environmental change.

All types of literacy in Earth systems have a definition like the above.

We must change the system, not the climate or the Earth system.

She called up the coordinates of the Earth system and plotted her course.

Life is an integral part of the Earth system.

The earth system: biological and ecological dimensions of global environmental change.