Green Plastics

ChemMatters - Episode 2: Plastics Go Green from ACS Pressroom on Vimeo.
How are these plastics being developed?
Scientists are looking for the "monomers" that are needed to make plastic in different areas where they naturally occur, like sugar cane, or corn. Then, though different chemical processes that I don't understand, the monomers are turned into plastic.
What makes these plastics "green?"
In normal plastics, the monomers that are used to make the plastics are taken from crude oil, which is oil that is pumped from the ground and is used in many ways, like as fuel for cars, boats and planes. However, the Earth's supply of crude oil is running out. These plastics are green because they are made from alternative sources, which are not running out.
What are some issues with plastics that were mentioned?
Both conventional and green plastics have their downsides. Conventional plastics are made from crude oil, which is a dwindling resource. It also requires power to process and turn into plastic in a factory, which often comes from some form of crude oil. Transporting the plastic also takes power. Usually the transportation is done by trucks, which require fuel to run, and they pollute the environment. Green plastics also need to be processed in a factory, which requires power to do. Like before, the power often comes from crude oil. Also the plastics are usually made from corn, which needs to be grown and transported. Some analysts say that too much land is being devoted to farming from non-humans, and not enough for human consumption. If they are right, there might be food crises without proper arrangement of our farm resources. 
How might these green plastics change packaging practices?
Green plastics are often viewed as "eco friendly" and "good for the environment," which might boost sales of products who make their packaging out of green plastics. When companies see that green plastic could make their product more popular, they will switch to green plastics. Also if a company switches to green plastics, they might reevaluate their packaging design and minimize it so the product has less packaging.