"Policy goals" won't be enough to protect bicyclists once the cars start driving themselves. Strong standards will be necessary to govern the interactions between cars and bikes in an autonomous future.
Urban agriculture is becoming a well-known idea all around the world. Most of it is done at the small-scale, but there's still the idea of creating large skyscraper farms to feed our cities. <em>Smithsonian</em> takes a look at the idea.