Magnitude

For a short time in the life span of the Earth, humans have made a significant impression as seen in the following.

Global Annual Data Indicator

10000 BCE

2008 CE

Human population

2 000 000

6,692,030,277

Meat production (land)

14 600tonnes

280,900,000 tonnes

Fish production

~0

144 200 000 tonnes

Cultivated grain

0

2 100 000 000 tonnes

Land area

13 423 420 000ha

13 423 420 000ha

Life supporting area

(cropland, shrubland,

grassland, savanna, forest)

10 297 900 000ha

10 297 900 000ha

Cropland area

0

3 191 300 304 ha

Ammonia (NH3) production

0

126 872 000 tonnes

Urea production

0

66 302 000 tonnes

Energy use

7.6e15 Joules

4.66e20 Joules

In 12000 brief years, our species has become a significant effector on the Earth’s surface. Will we be able to continue to prosper as the impact of our actions reverbrates?