Scientific communication involves far more than just getting the numbers it requires an understanding of how scientists think, how this differs from the way the general public thinks, and how to bridge the gap between the two mindsets. Geoff Hart is a Fellow of the Society for Technical Communication (STC), and has worked with scientists for more than 25 years. For 10 years, he edited the Exchange, the newsletter of STCÕs Scientific Communication special interest group. During this time, he wrote nearly 60 essays and other material examining scientific communication from a wide range of angles. This book collects the best of this material, revised and supplemented by Òlessons learnedÓ.