It's the tripod that sustains human life on Earth.

Google Image

Lost, blind, on a dark night ...

The human species has lost the ability to see, is lost in a dark night, they can not know where you are going, which direction to follow.

Lost the ability to see that life on Earth for all species, depends on three factors:

01) Astronomical Factors.

02) Climate.

03) Geology.

Astronomical, and geological factors that determine the climate is necessary for human life and the other species conditions: safe drinking water, temperature, healthy food, safe housing.

It's the tripod that sustains human life on Earth.

Dia da Terra

Brazil, Curitiba, November 16, 2014