This food preservation manual is written to assist the parent or club leader in teaching young people about food safety and preservation through hands-on activities. If you are introducing yourself or youth to the world of food preservation, this is a fun place to begin! As a leader you will need this manual, which includes lists of materials and handouts to be copied. Each youth should have th…
The various multidimensional derivatives take on more complicated forms in non-Cartesian coordinates such as cylindrical or spherical. You can derive the Laplacian for these other coordinate systems by changing variables and rewriting the unit vectors starting from the above Cartesian expression. Throughout this book we will often encounter sets of linear equations. (They are called linear equa…
The clay army stood in silent formation, guarding the tomb of the first emperor of China. Alert and ready for battle, they were to protect the emperor from evil spirits and robbers. If a robber did manage to break in, he might not escape in one piece—the clay army surrounded the tomb. Over seven hundred thousand workers built the first emperor’s tomb and created his army of clay. And it too…
For more than 150 years, since the publication of On the Origin of Species, biologists have focused on understanding the evolutionary chronicle of diversification and extinction, and the underlying evolutionary processes that have produced it. Although progress in evolutionary biology has been steady since Darwin’s time, developments in the last 20 years have ushered in a golden era of evolut…
Is the internet unhealthy? We planted this question in your mind with the title of this report and in the questions we ask throughout. But you will not be getting a simple yes or no answer.As you may have gathered, this publication is neither a country-level index nor a doomsday clock. We invite you to join us in assessing what it means for the internet to…
A Great Civilization Many people believe that the greatest of all the civilizations of the ancient world was the civilization of Greece. However, it is a little misleading to speak about ancient Greece as though it were a single civilization. Ancient Greece was not a unified country. It was a collection of independent city-states. The ancient Greek word for city-state was polis (/poh* lihs/). A…
Governing is the art of planning and predicting. Developing a picture of long-term jobs and skills requirements is critical for policymakers as they navigate rapid, complex and uncertain shifts in the economy and society. A wide range of areas – from curriculum development and careers guidance through apprenticeships and workplace training to occupational standards, migration and social insur…
Millennials are likely the most studied generation to date. According to U.S. Census Bureau statistics, there are plenty of them to study—80 million plus (the largest cohort size in history). There are data to find most of what you are looking for, as the data are varied and sometimes contradictory. In fact, Millennials are full of contradictions, which, of course, may explain the youth of an…
Fifteen to twenty billion years ago, the universe arose as a cataclysmic eruption of hot, energy-rich subatomic particles. Within seconds, the simplest elements (hydrogen and helium) were formed. As the universe expanded and cooled, material condensed under the influence of gravity to form stars. Some stars became enormous and then exploded as supernovae, releasing the energy needed to fuse sim…
Across the world, fisheries provide direct employment for around 38.982million people (Food and Agriculture Organization [FAO], 2020). In many coastal regions of the world, and particularly in many low-income contexts, fishing livelihoods remain the primary economic activity. Globally, they make significant contributions towards food and nutrition security, and are …