The Megabyte Bomb by Stanislaw Lem is a collection of essays on contemporary genetics and information technology. Research in these fields is turning into reality the sort of bold predictions that Lem enunciated years ago in Summa technologiae. Bioengineering is developing tempestuously, the global information system is embracing every aspect of life, and work is underway on producing artificial intelligence in machines. Lem discusses all these subjects with his own characteristically universal perspective, originality, and skepticism. He is a thinker who is wary about concluding that the Internet is an unadulterated blessing - just as he has always found it hard to believe in the intrinsic goodness of human beings.