Sustainability

Question 1

What makes a sustainable city?

Answer 1

• greener built environments
• involvement in local community of building making
• conserving buildings and open spaces
• economic opportunities
• planned expansion
• improved transport to reduce traffic and pollution
• carbon neutral development of renewable energy sources and careful planning for building materials

Question 2

Define ecological footprint

Answer 2

The area of land or sea that is needed to produce all the inputs a city uses and to dispose of its outputs

Question 3

How much of the Earth’s surface do world cities cover? And how much are they responsible for energy consumption?

Answer 3

World cities cover 3%

They account for 60% to 80% of energy consumption

Question 4

Define sustainability

Answer 4

Urban development which meets the needs of the present without sacrificing the ability of future generations to meet their own needs.
It must consider different aspects: natural physical social and economic.