■ Oil Dependence Delays developing alternative sources of energy. I would like to point out that the most
Improvements in Transport Oil is a cheap source of energy for indi- efficient shape for enclosing space is a
viduals in the short term but a very ex- dome rather than a pyramid. Plants may
There is an argument that may pass al- pensive one for society in the medium be grown aeroponically or hydroponi-
most unnoticed or undeservedly ne- and long term. Our oil addiction has de- cally in a dome-shaped greenhouse.
glected among the many intelligent argu- layed the technological development of Also, such multi-tiered city farms
ments in favor of the electric car alternative sources of energy and means would require a significant amount of car-
proposed in the article “Roadmap to the of transport for at least 20 years. bon dioxide and water. Hence, it is logical
Electric Car Economy” by Michael Horn Not only has the inevitable triumph of to combine a greenhouse with a power
(March-April 2010). It follows: the electric car been delayed, but also the generation plant that burns natural gas,
The electric car economy is breaking computerization of transport and the de- biomass fuel, or even trash from the city.
our addiction to oil and, along with it, velopment of automatic driving on ele- An integrated system (Canadian Pat-
the issues that distract researchers from vated, light, and fast lines. ent 2 289 991) comprises a power-genera-
Julio Arbesú tion plant with a thermal engine and an
Oviedo, Spain electric generator, and at least one green-
LETTERS: The editors welcome readers’ house for growing fruits and vegetables.
responses to material appearing in THE Electricity, exhaust gases, and steam are
■ Vertical Farming Is Not a
FUTURIST. Mail may