Natural sciences

A seminal historical work that has never been out of print. Highly llustrated with attractive contemporary images.

In TIME AND THE TECHNOSPHERE Argüelles shows that in order for us to survive and not destroy Earth's ability to sustain life we must change our definition of time and adopt a natural harmonic calendar based on the 13-moon 28-day cycle. Humanity deviated from this natural time 5000 years ago.

Explore the reaches of your imagination by combining art, craft, and mathematics to create the age-old geometric form of the polyhedra. More than 50 projects use just one center point to create shapes that are folded symmetrically and build upon each other.

In this follow-up to his first book, Folding Polyhedra, Alexander Heinz introduces eight more paper-folding models. Most of these models are easy to assemble from a combination of folded triangles, squares, pentagons, and hexagons, which are assembled in a symmetrical modular way, allowing you to create more than 60 forms by using and combining the different folded-paper models.

Grow Your Own Mushrooms is a beginner's guide to cultivating delicious and medicinal mushrooms at home. Learn step-by-step methods for growing six varieties, troubleshooting, and storing your harvest. Includes cooking tips and recipes to enjoy your mushrooms.

Published more than two decades ago to great critical acclaim and commercial success, A Brief History of Time has become a landmark volume in science writing. Stephen Hawking, one of the great minds of our time, explores such profound questions as: How did the universe begin—and what made its start possible? Does time always flow forward? Is the universe unending—or are there bounda

Million Dollar Maths is an invaluable guide to the straightforward and outlandish mathematical strategies that can make you rich.

Science has recently begun to prove what ancient myth and religion have always espoused: There may be such a thing as a life force.

Dannion and Kathryn Brinkley offer inspired and practical insights for those who want to enrich their individual life in a way that benefits not only themselves, but uplifts the entire planet.