WATSON: Welcome back to "News Stream" with live view of the night lights over Victoria Harbor here in Hong Kong. I'm Ivan Watson. Now, Canada is known for mousse (ph), maple syrup, and now possibly Mary Jane. Because Canada is now the first major industrialized nation to legalize recreation pot. That's right. The only other country in the world with similar marijuana laws is Uruguay. As expected, cannabis growers are praising the government's action. Take a listen.</s>BRUCE LINTON, CEO, CANOPY GROWTH CORPORATION: This is amazing, and it's going to be busy today. It's going to be busy tomorrow. I think the rest of the country is going to be busy. And we are going to have to keep setting our stuff in (ph). We should respect the fact that this happened because a lot of people are persistent and government action</s>WATSON: Busy getting stone. Well, Canada has allowed medical marijuana since 2001. Now, people are allowed to carry and share up to 30 grams of marijuana in public. Growers can now sell to anyone 18 years and older. On a different subject, an ambitious effort to remove plastic from our oceans is now underway. The ocean clean up group has hold this giant pipe nicknamed "Wilson" from San Francisco Bay to the Great Pacific Garbage Patch. And that is the largest pile of floating trash on the planet. Twice the size of the U.S. state of Texas. The U-shaped pipe has a net underneath it to trap floating plastic. Every three months, say, garbage boat will collect the trash and return it to shore for recycling. The group hopes to collect 50 tons of trash by April. Some experts doubt the project will make a dent in the 115 million tons of plastic already in our oceans. If you want to learn more about the effort, turn in -- tune in to "News Stream" tomorrow for our interview with the young inventor behind this purposeful project. And that is "News Stream." I'm Ivan Watson, but don't go anywhere, "World Sport" with Amanda Davies is coming up, next.
Canada Legalizes Marijuana; Giant Floating Pipe Launched to Clean Up Ocean Plastic.