MIT Technology Review – November/December 2023: The Hard Problems issue features the Intractable problem of plastics; Fixing the internet; Exploring what it would it take for AI to become conscious. Also, there are so many urgent issues facing the world—where do we begin? Bill Gates, Mark Zuckerberg, Jennifer Doudna, and others offer their ideas.

Think that your plastic is being recycled? Think again.

Kid surrounded by bins and scattered plastic containers proudly holds up a toy figure constructed by plastic parts

Plastic is cheap to make and shockingly profitable. It’s everywhere. And we’re all paying the price.

Plastic, and the profusion of waste it creates, can hide in plain sight, a ubiquitous part of our lives we rarely question. But a closer examination of the situation can be shocking.

Indeed, the scale of the problem is hard to internalize. To date, humans have created around 11 billion metric tons of plastic. This amount surpasses the biomass of all animals, both terrestrial and marine, according to a 2020 study published in Nature.

Currently, about 430 million tons of plastic is produced yearly, according to the United Nations Environment Programme (UNEP)—significantly more than the weight of all human beings combined. One-third of this total takes the form of single-use plastics, which humans interact with for seconds or minutes before discarding.

Minds of machines: The great AI consciousness conundrum

Philosophers, cognitive scientists, and engineers are grappling with what it would take for AI to become conscious.

David Chalmers was not expecting the invitation he received in September of last year. As a leading authority on consciousness, Chalmers regularly circles the world delivering talks at universities and academic meetings to rapt audiences of philosophers—the sort of people who might spend hours debating whether the world outside their own heads is real and then go blithely about the rest of their day. This latest request, though, came from a surprising source: the organizers of the Conference on Neural Information Processing Systems (NeurIPS), a yearly gathering of the brightest minds in artificial intelligence.