I thought this lecture was very interesting. As a senior in high school, it did become a little boring at times, mainly because I didn't understand the vocabulary. The idea behind this lecture was about ways for people to notice that our Earth's energy, other ways we can use energy from other sources, and how the climate can change. In the beginning of the video, Lewis talks about the problems that have occurred. For example, he talks about fossil fuels and how we can use another source of energy. He puts the United States into consideration along with the other countries and shows us where we stand energy-wise. I like the way he did this because it made me realize how much we actually put into the air. He later then talked about other sources that could be used to give us energy. The main one that he said we should use is solar. Solar energy is accounted for most of the available renewable energy on Earth. Solar powered electrical generation relies on heat engines and photovoltaics. Photovoltaics are arrays of cells containing a material that converts solar radiation into direct current electricity. This has been named the number one source that we could use for energy. This is better because the sun is out all day and it doesn't leave fossil fuels. The only problem that has occurred is that they don't have the technology to restore the sunlight when it is night, but they hope to solve in the future.
I think solar energy is the best way to go because, like I've said, its the most safest. It has Energy, National, Environment, and Economic securities.
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