There is no planet B.  But as a species, we're behaving as if there are several spares.

Here are some action ideas to help us "tread more lightly on the earth":

• Earth - Plant a tree. Grow some food. Waste less and compost what's left.  Feed a bee. Reduce meat consumption.

• Plants and animals - Protect endangered species.  Support neighbourhood wildlife.

• Rivers and Seas - Protect the rivers, save the seas.  Water is life. Our blue planet.

• Air - Cut greenhouse gases.  Switch to renewable electricity.  Cut local air pollution.