KICK THE HABIT
THE CYCLE – REDUCE
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from the airport instead of a city-centre railway station. Over short distances
air travel produces around three times more CO
2
per passenger than rail. It is
estimated to account for around 2–3 per cent of global CO
2
emissions and faces
intense pressure to cap its output. However, it should not be denied that some
of the new high-speed rail services have an appreciable carbon footprint them-
selves. Another good option for international or intercity travel may be a coach
or bus, certainly better than a car carrying only one person. Within towns and
cities buses outperform cars again, but they are seldom as good as trams, light
rail systems or metros. Cycling and walking will always be the greenest ways
of moving around a city, but not necessarily the safest, quickest or most practi-
cable, which understandably makes many people reluctant to try them. That is
where urban planners and politicians can make all the difference – by breaking
with the dominance of cars in city streets and providing favourable conditions
for alternative modes of transport. Having biking lanes and a working public
transport system in place is one thing, the other is how useful they are. Urban
planning can work towards amore functional and hence amore attractive trans-
port system. Locating shopping malls for example in places where they can be
easily reached by public transport is a strategy followed by Norway recently.
Shipping had been thought to be one of the better forms of transport for keeping
GHGs down, but studies show that its global CO
2
emissions are double those
of aviation, and rising rapidly. The IMO estimates shipping emissions at almost
three per cent of global CO
2
emissions in 2007. Recent articles in the press sug-
gests that CO
2
emissions from shipping have been grossly underestimated and
would amount to 1 120million tonnes or nearly 4.5 per cent of global CO
2
emis-
sions. This is almost twice the UK’s total emissions and exceeds all of Africa’s.
The worldwide fleet of 90,000 ships transports 90 percent of the world’s
goods, and shipping emissions are projected to grow by more than 70 per-
cent by 2020, as global trade expands. In order to tackle those emissions, the
European Commission has decided to propose adding shipping companies
to the EU Emissions Trading System from which shipping (just as aviation)
has been exempted so far. The emissions trading scheme is the 27-nation
EU’s key tool to fight global warming and meet commitments to reduce
emissions of greenhouse gases agreed under the Kyoto Protocol.
There are several ways of reducing the energy we use in travel and transport.
One is to obtain what we use and consume as locally as possible, whether