Superstring physicist Michio Kaku turns his eyes to the future, and sees many bright developments in the 21st century. What is really remarkable about this book is Kaku's ability to explain in a clear way how the Quantum revolution of the turn of the previous century has dramatically effected, or perhaps invented, the three great revolutions of the 20th century: computers, biotechnology, and quantum physics. Kaku is especially good in outlining his reasons for his view of the future; and gives pretty reasonable timelines for the achievement of certain goals. The book is easy for a layperson to read and understand, and gives a good overview of scientific development. Well worth reading, at times profound.