We've been caught out in the past by unexpected exhaust products from transport infrastructure. First it was horse manure, then it was CO². This time… - Tom Standage

... Throughout history, food has done more than simply provide sustenance. It has acted as a catalyst of social transformation, societal organization, geopolitical competition, industrial development, military conflict, and economic expansion. From prehistory to the present, the stories of these transformations form a narrative that encompasses the whole of human history.
Food's first transformative role was as a foundation for entire civilizations. The adoption of agriculture made possible new settled lifestyles and set mankind on the path to the modern world. But the staple crops that supported the first civilizations— and in the Near East, and in Asia, and maize and potatoes in the Americas—were not simply discovered by chance. Instead, they emerged through a complex process of , as desirable traits were selected and propagated by early farmers. These staple crops are, in effect, inventions: deliberately cultivated technologies that only exist as a result of human intervention.

During Queen Victoria's reign, a new communications technology was developed that allowed people to communicate almost instantly across great distances, in effect shrinking the world faster and further than ever before. A worldwide communications network whose cables spanned continents and oceans, it revolutionized business practice, gave rise to new forms of crime, and inundated its uses with a deluge of information. ...
The telegraph unleashed the greatest revolution in communications since the development of the .

When hackney carriages were first introduced into London — these were the first carriages that you could hail in the streets — so, basically taxis — this led to a massive backlash from .. the incumbent providers of rides in London— who were the . And that was how you used to get around London. You would hail a boat by the river and say “I want to go to ” or “I want to go up to ”. And so they all complained and they said their profits were running away on wheels, because these hackney carriages had showed up.