Join Dan and Kate this week as they talk about pollution. How is plastic affecting the environment and what can we do to make the situation better?

This week's question:

How many pieces of plastic are there in each square kilometre of the world’s oceans? Is it:

a) 22,000 pieces of plastic
b) 38,000 pieces of plastic
c) 46,000 pieces of plastic

Listen out for the answer in the programme!