Books like A Planet of Viruses
Carl Zimmer
A Planet of Viruses is 116 pages, about 2 hours 8 minutes at 250 words a minute.
8 books to read next
How long each takes
Principles of Virology 14.7 h 
Basic Virology 11.0 h 
Zone One 5.1 h 
The End of October 7.3 h 
A Colour Atlas of Virology 4.4 h 
Blackout 12.1 h 
Understanding Viruses 14.2 h 
Ace in the Hole 7.6 h Bar height shows length. Estimated at 250 words a minute.