Excellent course.

It's a course where you can learn many words else what are the causes of the climate change, differences between climate change and global warming, how help to the environment etc. I'm very satisifed with this course. A great greeting everyone.

Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.^[1][2]

It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power. Active solar techniques include the use of photovoltaic systems, concentrated solar power and solar water heating to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light-dispersing properties, and designing spaces that naturally circulate air.

The large magnitude of solar energy available makes it a highly appealing source of electricity. The United Nations Development Programme in its 2000 World Energy Assessment found that the annual potential of solar energy was 1,575–49,837 exajoules(EJ). This is several times larger than the total world energy consumption, which was 559.8 EJ in 2012.^[3][4]

Excellent course! My reading skills have improved tremendously as well as the ability to write effective summaries.

Good course, and you also can increase your English skills.

This is a very good course for an engineer who needs to improve the skill of listening and presenting.

I learn a lot in this course.

I learn a lot from this course.

gooddsvrrrrrrrrrrrrrrrrrrrrr

This online course is very useful so l like it very much.

Very useful and easy to follow up.

Its a very good course

This course opened my mind to learn more about climate change and new technology. I never realized before that the climate situation that we faced now is bad. Anyway, I think I improved my language skill. Thank you for making the useful course.

O curso é muito bom!!! Os instrutores são extraordinários. Os conceitos científicos foram apresentados com clareza bem como a língua inglesa.

I'm very grateful because I really learned a lot with this course. It was great and I enjoyed it so much that I want to continue learning.

nice

I love this course! Even though English it's not my first language but teachers are using the easy sentence and talked slow. It's helped me a lot and make me craving to learn more. I have bachelor's degree in Materials Science and I think I'm going to get my master soon. Thank you for inspiring me!

I think the content is really interesting and not hard. For non-native speaker, it's a good way to imporve listening and oral English.

it's a really useful English learning program for STEM.

it is a great course, I have learned a lot.

Really thankful for the professors, I get lots of information about global warming. I will definitely join for the next course tough by the professors from Pennsylvania University. Thank you for all of this.

It's first time for learn this way, So expect.

As a audio learner, I much appreciated the use of technology in the class in conjunction to discussing ,readings and presentation projects. I think it's one of the most progressive lit courses I’ve ever taken between the somewhat unknown readings and way of instruction. I feel like my writing has not only improved by my mind is more open.