Cotton-and-squid-bone sponge can soak up 99.9% of microplastics, scientists say

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1. Some important questions not asked here.

   >The study tested the material in an irrigation ditch, a lake, seawater and a pond, where it removed up to 99.9% of plastic. It addressed 95%-98% of plastic after five cycles, which the authors say is remarkable reusability.

   * What’s the total scale of oceanic plastic pollution?
   * How much cotton (fertiliser,, agricultural land, pesticides) and how many squid will it take to make enough sponges to make a meaningful dent in that total amount of pollution?
   * What happens to the plastic contaminated sponges afterwards?

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