are you contributing to the problem or are you helping? talk can raise awareness. people who are aware don’t necessarily care. only those who care are going to be willing to take action. change only comes from action.
Greenpeace is good at making the public aware of issues that they are concerned about. they unfortunately don’t always check their facts surrounding problems they’re concerned with. so, as with any other source, be wary when reading information presented by Greenpeace. regardless of what the exact information is that they are presenting on a certain issue, the fact remains that they are very skilled at identifying important environmental problems and drawing awareness to them. they may not create solutions, but i feel that they often provide awareness to the general public. this is needed in order for groups to coalesce and take action on problems like the existence of the great Pacific garbage patch. they have a portion of their website dedicated to the garbage patch: http://www.greenpeace.org/international/en/campaigns/oceans/pollution/trash-vortex/
are governments helping? some try, but like most things that they stick their hands in, they more often than not, complicate the issues attempting to be fixed. here is an editorial from the Economist that further explores some of these issues: http://www.economist.com/node/13135349
here are some other groups that are spreading word and taking action to help resolve the plastic island problems:
the Plastic Pollution Coalition [http://plasticpollutioncoalition.org/
Save Our Shores http://www.saveourshores.org/
Heal the Bay http://www.healthebay.org/
Conservation International http://www.conservation.org/where/oceans/Pages/overview.aspx