What incurs more energy expenditure? "Transferring" moving image (video) or physically moving to a place.
This means environmentalists would do well to advocate laying more fiber than getting expensive Mass Rapid Transport systems for cities.
Ideally if people can stay at home in their villages/small towns and find work at virtual workplaces rather than moving to polluted megapolises or "foreign" nations with annoying visa regulations and corresponding taxation annoyances.
In our country(India), big clueless ISPs worry about collecting rent for international bandwidth (as mere resellers) rather than helping make domestic bandwidth more uselful and inexpensive. The government monopolizes generation and distribution of electicity, preventing environment friendly local generation and distribution. The growth of ISPs is hampered by old world telecoms and bureaucrats at clueless organizations like TRAI.
Are we not wasting money trying to buy up large oil companies instead of making our nation ape the wasteful west. We don't need more cars,buses, trains and aeroplanes, we need more fiber(and wireless) networks and a governmental system that provides all the facilities without the need to move away from the computer monitor.
I do not envisage elimination of all forms of travel, but the most frequent and most wasteful of them all "the daily commute"