I'm not sure which ones help stop pollution but i do know that humans are not helping.
Many countries are helping. Thy have banned the use of CFC's.
Fundraising and helping the animals
you can stop land pollution by recycling.
we can stop this pollution by throwing booms.
by cleaning our bowls we can stop personal pollution
Pollution: STOP IT OR FACE IT
It should not stop helping altogether. It is America's interest to help other countries, so they benefit from helping others in the long tern, when they help in the right way. It needs to be more careful how it helps countries and not get to the point where they are interfering. America also needs to look after more of its own problems, but not to the exclusion of helping others. Mistakes in foreign policy can affect domestic policy, so some of both is needed.
I think that they are helping in a way but aren't because the ships, and, or planes have to use gasoline to get them over here so that is also causing even more to our pollution problem.
you can stop by smoking
it hasn't because one thing people try but then there are so many of the people who keep polluting it just stops helping so if we want to stop it we all have to get involved by helping
High altitude particulate pollution may be helping to reduce global warming.