TAKE THIS PROFESSOR. SERIOUSLY. easiest A i have ever received in my life. Not only that, he genuinely cares about his students. He even made a facebook group where students can post homework questions and any questions that is related to the class, and he usually responds within 24 hours. His midterm and final exam was actually enjoyable. Professor Li wants you to succeed in his class and he would give very obvious hints on his exams. He basically WALKED THE CLASS THROUGH HIS FINAL. It doesn't get any easier than this and you actually will learn something.

- Professor Li is knowledgeable about the topics taught in this class, which primarily focused on the formation of clouds, aerosols and their effects to the atmosphere, and incoming/outgoing radiation.

- He simplified many of these topics way down and does tell you the bottom line about what is most essential for each one (towards homeworks and tests).

- There were many times where classes were boring, but at times, the topics proved to be very interesting.

- There were 6 homeworks (20% of grade). Initially, some of the problems looked more complicated than others, but he posts hints on the class Facebook page (yes, he uses a group page vs. an ‘unwieldy’ CCLE) and explains them with more detail in discussion (no TA for this class – he leads discussion).

- There was 1 midterm (30%) and a final (40%).

- He provides equation sheet and some hints during tests (though more hints were given during midterm than final).

- The concepts from lectures were focused on more in tests (versus homeworks, where more calculations are performed). Again, he says in lecture the bottom line for each topic, and they’re reflected in tests.

- He cared about student learning, as reflected by mentioning it many times (including stepping away from a job at JPL to become a professor) and his emphasis on student participation.

- Though participation is only 10% of grade, he’s as big a stickler of it as any professor I’ve ever had. He has you sign a sheet into each class and uses that to keep track of every student who attends each class, asks/answers questions, and occasionally calls on those who are quiet.

- Overall, as long as you comprehend the material and do well on the homeworks and tests, you will get a decent grade.