Another good volume of the Charlie Brown 'Cyclopedia. Again it was printed in 1980 so they have Pluto listed as a planet, but that's really the only thing that makes it seem dated. They also have the typical evolution standpoint so they talk about stars being billions of years old and plants existing on earth for billions of years, but other than that's it's a good read and very useful.
This entire review has been hidden because of spoilers.