Your empty cuppa could capture carbon

Polystyrene can be upcycled into carbon sponge material.
Humanity has littered the sky with the refuse of fossil fuel use, releasing enough CO2 to change the planet’s climate. We are also chucking incredible sums of carbon in the form of plastics into landfills and into the environment around (and inside of) us. What if cleaning up one of these problems c…
Ars Technica