We all know there are four seasons in a year. But how do we know? Join intrepid young scientist-adventurer Joulia Copernicus on a journey around the world as she explains with humor and wit how we know what causes the seasons.

"Introduces the idea that many things in the world around us are cyclical in nature and discusses how day changes to night each day"--Provided by publisher.

NEW EDITION, REVISED AND UPDATED Since employees who walk out the door cost their companies up to 200 percent of their annual salaries to replace, retention is one of the most important issues facing businesses today. And with so many surveys reporting that employees are unhappy and not working up to their full potential, engagement is a second serious and costly issue. The latest edition of this Wall Street Journal bestseller offers twenty-six simple...

Retention is becoming one of the most pressing concerns of employers worldwide. This book provides an overview of talent retention and defines retention and turnover in very specific measures. It explores the full impact of talent departure and most important it offers proven solutions to talent retention. The book clearly shows how to forecast the ROI of talent retention solutions and how to capture the actual ROI after the solution was implemented....

With replacement costs high and start-up time critical, employee retention is more valuable than ever. This best-selling guide provides 26 strategies to keep talented employees happy and productive. Citing research and experience with dozens of organizations, the authors present many examples of how today's companies have applied their retention strategies and increased their retention rates. The chapters are arranged alphabetically, from "Ask" to...

Follows the sun from dawn to dusk to explain how light rays travel, how shadows are formed, how the moon lights up the night sky, and more.