question: why is the world still so dependent on fossil fuels?

There is no doubt about it - fossil fuels still reign supreme. Industry and consumers are still slaves to this non-renewable resource despite the fact that it pollutes our environment and results in an inequitable distribution of wealth that is concentrated in the hands of a select group of people not necessarily concerned with the …

question: how can transportation systems be redesigned to improve efficiency?

Too much of anything is a good thing.  Each concept and item has its own place and purpose.  The same can be said about transportation systems.  Currently, too much of the world’s transportation system is based upon cars and although they offer a great deal of mobility and independence - two qualities that many aspire …