Sorting through all the choices can be overwhelming and a big waste of time; it's important to be able to home in on sources that best match your needs and learning style.

And I feel like it's archaic in a way that it's a long list of stuff sorted by date and time or sender, and we waste so much time sorting.

For instance, as of April, residents in a dozen Guangzhou suburbs had to start sorting their trash into separate bins meant for recyclables, kitchen waste, hazardous waste, and other waste.