In my Philosophy of Science class, I am supposed to be writing a paper of an analysis/comparison of the ideas of Popper, and how Sagan (in DHW) expands upon them. Frankly, I don’t see the comparison… Any help?
Sagan, the preeminent baloney detector theorist and skeptic, and Popper, the inventor of falsification, seem to share a lot of commonalities in their approach to scientific reality.
I assume you’ve actually READ them and are not simply hoping for a handout.
I dunno who Popper is (in Science). Is the ‘Sagan’ being referred to ‘Carl Sagan’? I don’t think so.
JS Princeton’s reply suggest Popper and Sagan were two Philosophers - and at least Popper - the inventor of falsification - would be okay with giving Chekmate his homework.
Karl Popper & Carl Sagan. Is it similar first names…? 
Karl Popper (if that was his real name) emphatically denied the existence of falsifications.
Carl Sagan has earned the right to be known by his last name. Newton, Hawkins, Oppenheimer, Sagan. Einstein. Erasthones. Pythagorwhisper
A whole bunch more of course.
I would mention the greek mathemeticians/philosophers who are known by really cool and unique names. Yet the royalties of just typing them are too steep.
Corbomite wrote:
“Every genuine test of a theory is an attempt to falsify it, or to refute it. Testability is falsifiability; but there are degrees of testability: some theories are more testable, more exposed to refutation, than others; they take, as it were, greater risks. […snip…] One can sum up all this by saying that the criterion of the scientific status of a theory is its falsifiability, or refutability, or testability.”
(Italics are in the original.) — Karl Popper, Science as Falsification, exerpted from Conjectures and Refutations (1963)
And, as Libertarian’s link shows, Popper was explicitly concerned with the distinction between science and pseudoscience, while Sagan’s Demon-Haunted World is about pseudoscience, so it shouldn’t be too difficult to compare their thoughts on the subject.