Carl Sagan isn't on yours. Give this a read. Especially, pay a little attention to his baloney detection kit.
The Baloney Detection Kit: Carl Sagan’s Rules for Bull****-Busting and Critical Thinking
"The kit is brought out as a matter of course whenever new ideas are offered for consideration. If the new idea survives examination by the tools in our kit, we grant it warm, although tentative, acceptance. If you’re so inclined, if you don’t want to buy baloney even when it’s reassuring to do so, there are precautions that can be taken; there’s a tried-and-true, consumer-tested method."
Sagan might have been an excellent scientist and science educator, but it's a shame he didn't follow his own advice on subjects he was less knowledgable about as he contributed greatly to the spread of pseudohistorical myths.
It would be quite difficult to produce a segment of TV more factually inaccurate than the above part of Cosmos (although Fox often tries to give it a run for its money)