8
10
,000,000,000
4
°
Challengesof the21st century
Growingworldpopulation
It isestimated that by2050 the
Earth'spopulationwill have
reachedbetween9and10billion
people.[2]
Ecological footprint
Ifwe continue to liveaswedo
now,wewill neednearly3Earths
tosupport our lifestyle in the
year 2050.[2]
Climate change
The temperatureof theEarth’s
atmosphere is four degrees
higher than itwasbefore the
onset of industrialisation.[4]
3
x
Sources
[1] German Federal Environmental
Agency,
-
desamt.de/, 2012.
[2] LivingPlanet Report of theWWF,
2012.
[3] The futureof energy, an initiative
of theGerman FederalMinistryof
EducationandResearch, 2013.
[4] Report issuedby theWorldBank,
Turndown theheat: climate
extremes, regional impacts, and
the case for resilience, 2012.
Aneye to the future
