Frontiers II is Isaac Asimov's last full-length science book - the final testament of his genius for taking the reader to the cutting edge of scientific investigation and discovery. Gathering 125 of the celebrated science essays that represented the climactic chapter of Asimov's legendary writing career, this wonder-filled volume spans the full spectrum of the excitement and enlightenment that is science on the brink of tomorrow. With the intrigue and accessibility of a scientific Ripley's Believe It or Not, Asimov reveals a riveting array of modern science breakthroughs. How has the probing of proteins brought us to insights into the origin of life? How far have we come on the path to producing life in a laboratory? What are the latest revelations about the nature of dinosaurs and the mystery of their extinction? What recent startling sightings of planets, stars, and galaxies have astronomers made? What is the current thinking on the possibility of establishing human colonies on Mars? What do we now know about black holes - and can one of them actually have landed on earth? Can computer intelligence ever surpass human intelligence - or even that of a cockroach? What are the gravest dangers to our environment - and the best solutions to date?