From Jacqueline Lawlor
You suggest that hydrogen would be an environmentally safer alternative
energy source for cars. But would it?
The article outlines numerous methods, the most promising being the fuel
cell. But the problem with the fuel cell waste product is that it is still a
greenhouse gas—water vapour. With the recent floods still on our minds,
has nobody thought that although this is a renewable alternative to fossil
fuels, it would still release a greenhouse gas into the environment? Using the
estimate that there will be one car for every seven people by 2020, the amount
of water being emitted by each fuel cell is not quite so insignificant.
One way round this would be to use the fuel cell system described, but
instead of releasing water as a waste product, it could be recycled and used to
power the car in a closed system.
Hornchurch, Essex
