Natural sciences

From the creator of the wildly popular xkcd.com, hilarious and informative answers to important questions you probably never thought to ask. Millions visit xkcd.com each week to read Randall Munroe's iconic webcomic. Fans ask him a lot of strange questions: How fast can you hit a speed bump, driving, and live? When (if ever) did the sun go down on the British Empire? When will Facebook contain mo

This guide to celestial navigation has been popular ever since it first appeared in 1969. Revised in 1982, Celestial Navigation is a quick, easy, and thorough explanation (with realistically worked problems) of the practice of celestial navigation at sea, using simple and inexpensive equipment. Extracts from the Nautical Almanac and Pub. No. 249. Blank workforms are included.

Stephen Hawking once said that the unanticipated consequences of artificial intelligence will be the greatest threat to humanity's survival. In this book, Dr. Andrew Silverman reveals why the powerful consciousness of the human mind could never be manufactured and so cannot be reproduced with technology.

Merging the scientific discipline of botany with ancient, medieval, and Renaissance traditions of occult herbalism, this seminal guide was first published in French in 1902 as a textbook for students of Papus's École hermétique and sparked a revival in the study of magical herbalism in early twentieth-century France.

Throughout history, many cultures have experienced the effects of verifiable healings, along with hexes, curses, witchcraft, voodoo and other mysterious phenomena. These effects - many of which were elicited by unscientific means - were brought about by the beliefs and lore of the society.

A personal view of the relationship between science and religion explains how the two fields can work together to alleviate human suffering, arguing that we need to see and understand the connections between science and faith and that such enlightenment holds the key to achieving peace both within oneself and the world at large. Reprint. 35,000 first printing.

Alphabetically arranged entries offer a feminist perspective on mythology, anthropology, sexuality, and religion and trace major figures, myths, concepts, and symbols back to their pre-patriarchal origins.

Beloved spiritual teacher Vex King follows up his international bestseller Good Vibes, Good Life with this essential guide to building meaningful, mindful, and loving relationships.

The National Aeronautics and Space Administration - NASA - was established on July 29, 1958. Ever since that day, NASA has been at the forefront of efforts to explore outerspace, resulting in the Apollo missions to the moon, the Skylab space-station and today's space shuttle. But behind the open face of NASA, there is a much more mysterious world.

The case against UFOs and UAPs (Unidentified Aerial Phenomenon) has not been put to rest. Although UFOs “officially” did not exist for decades according to the government, reports of sightings continue to be made, and the latest releases from the government and related hearings have surprised the world.

A violinist sees a scarlet form when he plays a certain note; a rock star sees waves of blue and green as he composes a ballad; an actress tastes cake when she utters the word "table." Described by some as a superpower this mingling of the senses is called “synesthesia,” and the people who possess this amazing gift are called “synesthetes.

Exploring our emergence as self-aware members of a planetary home and entire Universe that is a unified and innately sentient entity, Jude Currivan, Ph.D., shows that mind and consciousness are not what we possess but what we and the whole world fundamentally are.

Beyond Einstein takes readers on an exciting excursion into the discoveries that have led scientists to the brightest new prospect in theoretical physics today -- superstring theory. What is superstring theory and why is it important?