jean wiener thinks haiti needs to change its policies. jean: without your environment you have nothing. i mean your social development, your economic development and all of that is linked to having a healthy environment and the environment in haiti, as far as i'm concerned is still very much worth saving. reporter: that's why he's continuing, despite all the resistance. anchor: for more information about haiti, you can follow us on twitter. there is no vaccine against hepatitis c. the infectious disease, which affects primarily the liver, is spread via blood-to-blood contact associated with intravenous drug use, poorly sterilized medical equipment, and transfusions. north african countries are particularly hard hit by the disease, which is also common in china and mongolia. there is good news. there is a cure. a pill which has the power to rid patients of the disease -- often in a mere matter of weeks. but there's a catch. for most hepatitis c sufferers, the pills are simply too expensive. >> it's like now i feel like that, you know, what

jean wiener is a marine biologist. returned home. more than 20 years ago he founded the foundation for the protection of marine biodiversity. jean: seeing all the trash on the beach like this -- i can't even really describe it. i mean when i used to go to the beach when i was younger it was pretty clean in most places but nothing like this. this is just an environmental disaster and it doesn't just stay here. it also travels through the oceans, it ends up in other countries, and i think we'll have a real problem. reporter: the people in cap haitien and the neighboring villages live from fishing, but the men usually just find garbage in their nets. the foundation, together with local authorities, has already established five marine protection zones so fish stocks can recover. jean: i voice liked -- i've always liked nature, i've always been in the water in the ocean all the time when my family would take me when i was younger to the beach. so it's kind of natural i think that i fell in love with the ocean. reporter: protecting the ocea