in this we will discuss about that what is sustainability..? and how the developed Cities considered the sustainability,,? after that we will discuss that what is the key factors for sustainability in cities and countries..??? what role transport plays in the development and sustainability in countries.,? than we will see some examples of some sustainable cities ,that what steps these countries and cities follows for sustainable and to develop their cities,,? top 10 countries are listed in this

3. What is sustainability..?
Sustainability in cities..
Key factors for sustainable cities
Sustainable transport
Example of sustainability's in cities

5. Sustainability focuses on meeting the needs of
the present without compromising the ability of
future generations to meet their needs.
In simple, sustainability is being able to
produce what we need today without future
generations having to go without..

7. sustainable city enhances the economic, social, cultural and
environmental well-being of current and future generations.
Sustainable cities sometimes known as ecological or eco cities are
settlements designed to have as little impact on the environment as
possible.
Many people are working towards trying to make cities
more sustainable. A sustainable city offers a good quality of life to
current residents but does not reduce the opportunities for future
residents to enjoy.

8. Resources and services in the city are accessible
to all.
Public transport is seen as a viable alternative to
cars.
Public transport is safe and reliable.
Walking and cycling is safe.

9. In London, Investing in public transport - improving the efficiency
and safety of buses and trains.
Encouraging the use of bicycles. Bristol was the UK's first cycling
city. It encourages the use of bikes by having bike festivals,
investing in cycle lanes and supporting projects which promote
cycling.
Promoting car sharing schemes for areas poorly served by public
transport.

10. Curitiba is the capital city of the
Parana state in Brazil. Nearly 2
million people live there. The city
has had an urban master plan since
1968. Part of the plan is the Bus
Rapid Transport (BRT) System.
80 per cent of travellers use the BRT.
The bus rapid transit system uses
triple section bendy buses. It carries
2 million passengers a day.

12. Areas of open space are
safe, accessible and
enjoyable.
New homes are energy
efficient.
There is access to affordable
housing.
Use 3r Reduce,
Reuse,Recycle

14.  10. Frankfurt, Germany
 9. Hong Kong
 8. Oslo, Norway
 7. Munich, Germany
 6. Zurich, Switzerland
 5. Vienna, Austria
 4. Singapore
 3. Edinburgh, United Kingdom
 2. Stockholm, Sweden
 1. London, England

15.  Frankfurt is the financial hub in Germany and hosts the
European Central Bank. Frankfurt has also been an eco-city
for years now.
 Over 52% of Frankfurt is covered by open green spaces like
water bodies, woodlands, and parks.
 The local government has a concrete plan for nature and
water conservation, energy efficiency, and climate
protection.
 The city plans to be 100% dependent on renewable energy
source by 2050 and reduce the carbon emission by 50% by
2030.

16.  Boasting more skyscrapers than anywhere else does in the world, Hong Kong
also happens to be one of the world's most sustainable cities.
 Most of Hong Kong's achievements in sustainability have been on the profit
side, as they are, after all, a major world financial center.
 Hong Kong has a diverse economy based on banking, tourism, electronics,
and textiles. The city also has a large and efficient public transit system,
which means that locals do not need access to a vehicle.

18. Oslo is the capital and the largest city in Norway.
 It is also a leading city in sustainability, thanks to its
plan to be a "City of the Future" through focus on
cutting down on carbon emissions and waste.
 The Oslo Airport is home to a Green Terminal, the
first of its kind in the world

20. Munich is the 3rd largest city in Germany and also the most
sustainable.
Just like the other German cities, Munich has a concrete strategy for
climate protection and nature and water conservation.
Munich targets to be using 100% clean electricity by 2025. To
protect the climate, Munich targets to reduce carbon emission by
10% every five years and become carbon neutral in 2050.

22.  This Swiss city is famous for its flourishing finance business, unique
transport system, and high-quality lifestyle.
 Zurich can count on a sustainable transport system, and also invests in
efficient and renewable energies.
 Zurich wants everyone using 2,000 watts of green-energy by 2050.

24.  The city of Vienna has implemented a comprehensive climate protection
strategy, sustainable business, sustainable procurement, and recycling of
bottles.
 The capital city of Austria is the first city in the world to have a fleet of
electric-powered buses throughout the central city which reduce carbon
emission while improving citizens' standard of living.
 These buses recharge at the bus terminal ensuring that they run efficiently
all day long.

26.  Singapore has an inadequate supply of fresh water, but since importing fresh
water from Malaysia is costly, the state developed novel methods to ensure
they use the scarce supply of water in the country wisely.
 Singapore took advantage of numerous water management innovations
including saltwater desalination, recycling of reclaimed water, and rainwater
catchment methods.
 The city has eco-friendly transport regulations which discourage
unnecessary vehicle ownership.
 The Zero Energy Building is the greenest in the country and a test subject for
future building designs.

28.  Edinburgh, the second largest city in Scotland, is also one of
the world's most sustainable places.
 Edinburgh particularly ranked highly in the "people" portion of
the analysis, thanks to its vibrant urban life.
 In fact, Edinburgh ranked number one in the world in terms of
"people".
 It's not surprising considering the city also enjoys a low crime
rate and a relatively small income gap.

30.  The capital of Sweden stretches across 14 islands where the Malaren Lake
flows into Baltic Sea.
 Over 2.3 million Swedes live in the metropolitan area of the city.
 Swedes rank first in the European Union in organic food consumption,
usage of renewable energy, and recycling of bottles and cans.
 Stockholm is recognized for its numerous innovative urban sustainability
goals and visions which includes becoming 100% fossil-fuel free by the end of
2050.
 The city is known for increasing their GDP-growth while lowering carbon
dioxide emissions.

32.  London is one of the most popular cities in the world both for tourists and
residents, and it is a great example of a sustainable metropolis.
 In 2003, London introduced taxes on vehicles entering the central city
during the weekends as a means of discouraging the overcrowding of cars.
The collected revenue funds public transportation and related
infrastructures.
 The local government has implemented numerous strategies including an air
quality plan, noise reduction, and waste recycling, among other policies.