William Harvey and the circulation of the blood (Pioneers of science and discovery) Book

This is a nice collection of articles, editorials, and essays by Asimov about science fiction. Many of them are introductory or elementary in nature, and there's quite a bit of overlap and repetition, but his clear and friendly style makes it a fun and painless read with an occasional gem of insight or information that makes it all worthwhile. His comments about writing, films, and the importance of getting scientific and historical details right and consistent are worthwhile, too. He genuinely loved the field, both from a professional and fannish perspective, and that feeling shines through.