It is hard to explain the way carbon, methane and ozone in the atmosphere cause the Earth to heat up. It is easier, I am telling my environmentalist friends, to understand that we will not be able to swim in the oceans.
Practically every kind of animal, from plankton to whales, is now contaminated by plastic. It's in the birds, in the turtles, in the fish. At the current rate, we could have 1 ton of plastics for every 3 tons of fish by 2025.