How do you know how healthy your local river is, and whether it is improving? Academics think they have come up with the answer – a simple report card, like the one a schoolchild brings home at the end of the school year.
How do you know how healthy your local river is, and whether it is improving? Academics think they have come up with the answer – a simple report card, like the one a schoolchild brings home at the end of the school year.