My first language was Polish, but I've lived in the US most of my life and my English is better than many Americans'.
So now I say that I'm a native English speaker who is fluent in Polish.
I personally think it will take a complete shift in human mentality. One that will only come about via artistic movements, whether that be music, painting, film, or even propaganda posters.
IMO, art is the most important factor for bring about such a massive cultural shift. Kind of like how art in the Renaissance caused people to view life more scientifically and logically instead of based purely of faith.
Similarly, art from the the hippie movement in the 70s promoted peace and love instead of competitiveness, war and destruction.
Even if they raise hotel prices 50%, they'll still be cheaper than hotels in other massive cities. If people don't mind paying $300/night in Paris or London, they'll be okay with paying $150-200/night in Barcelona.
But per capita, China is pumping way less greenhouse gasses into the atmosphere than the USA. And much of China's industry only exists to sell cheap goods to Western countries.
China also built more high-speed rail in a decade than the US has in it's entirety. Not to mention how fast they're producing electric cars and solar panels.
Probably via some attempt to force everyone to verify who they are online by providing their identification documents. It will probably be managed by some company specialized in handling that data, and of course willing to share the data with police and other gov organizations. Data that will be used to track citizens.
Just another endless battle to keep net neutrality alive.
As someone who does R&D testing on plastics that are used in medical devices, I have some insight. Of course the type of plastic matters, but all plastics use carcinogenic chemicals during the manufacturing/extrusion process.
To make most plastic, a polymer resin is mixed with additives such as solvents, plasticizers, and stabilizers at high temperatures. Ideally, you want the additives to evaporate out during production so that you're left with just the newly formed plastic.
But some of these additives get trapped in tiny air pockets between polymer chains. When they're reheated, the polymer chains relax and release the volatile, carcinogenic additives into the air.
This is likely where the toxicity is coming from, not the polymer chain itself. So regardless of the type of plastic used, reheating the polymer during 3D printing will release some volatile additives.
The fact that the remote/rural bus stops aren't being used is not a fault of public transportation itself. But rather, it's the fault of route design/planning.
My first language was Polish, but I've lived in the US most of my life and my English is better than many Americans'. So now I say that I'm a native English speaker who is fluent in Polish.