How many new babies can the planet sustain
There are hundreds of ways people are trying to reduce waste and help preserve our environment.
So we came up with our pick of 10 planet-savers.
1. Only have one child
2. Reduce your intake of animal products (meat and dairy)
3. Reduce your use of fossil fuels (petrol, diesel, gas)
4. Avoid throwaway plastic products
5. Eat local food - and grow your own
6. Compost your organic waste
7. Treat water like a precious resource
8. Buy secondhand and local
9. Only wash clothes when they are dirty
10. Dry your washing on a line
'I can't stress enough that once your dog has signs, you're too late.'