I have read and enjoyed much of Sagan's later work, unfortunately I ignored him for a long time, largely because of his participation in the bogus and thoroughl

I have read and enjoyed much of Sagan's later work, unfortunately I ignored him for a long time, largely because of his participation in the bogus and thoroughly politicized TTAPS study that invented "nuclear winter". If you want to be taken seriously as a scientist don't let your political beliefs run away with your brain, even temporarily. Stephen Jay Gould is worthless, I won't waste any time any more reading any of his work.