Do all animals sleep? 
Some animals never exhibit a state that meets the behavioral definition of sleep. Others suspend or greatly reduce ‘sleep’ behavior for many weeks during the postpartum period or during seasonal ...
Einstein's Antigravity 
By Tim Ventura Part 1. Nick Cook’s Mysterious Discovery Part II. The Philadelphia Experiment Part III. An Accidental Replication? Part IV. John Dering’s ...
EXPLORING the Cell above we see a few thousand bacterial cells on the point of a pin. But a few trillion human cells together becomes a person who can think, eat and talk. The fate of the cells determines in large part ...
The Biology of the Cell Teacher's Guide This teacher’s guide is designed to help you better prepare your students for their upcoming visit to the Northern Stars Planetarium for a presentation of The Biology of the Cell. This guide will ...
SOLAR ENERGY FOR THE CLASSROOM The sun only appears to move across the sky as a result of the Earth’s daily rotation on its axis. The sun’s apparent position in the sky is commonly described by two coordinates, altitude and ...
ESTIMATING POWER FROM A SOLAR PANEL The usable power generated by the Davis Solar Power Kit may vary depending on latitude, time of year, weather condition and the storage battery capacity. This Application note discusses estimating ...
What is organic chemistry? This book is going to show you what enormous strides have been taken in the understanding of organic chemistry since the science came into being in the early years of the nineteenth century. Organic ...
Dictionary of Chemistry The McGraw-Hill Dictionary of Chemistry provides a compendium of 8000 terms that are central to chemistry and related fields of science and technology. The coverage in this Second Edition is focused ...
Organic Chemistry No matter the reason – the benefits of wholesome, more healthful food and sustainable resources for the optimists, or Mad Cow Disease and pesticide residue for the pessimists – more people are ...
LABORATORY SAFETY In the laboratory the chemist works with many potentially dangerous substances. Yet, with constant alertness, awareness of potential hazards, and a few common-sense precautions, laboratory operations ...