"Break through your brick walls! Your family history research is humming along just fine–you've discovered a trove of old letters here, a census and a birth certificate there. Then something genealogists call a brick wall stops you cold: You can't find the record you need. Your great-grandmother's maiden name eludes you. You don't know where your immigrant ancestor was born. Now you can meet those obstacles with the advice in 101 Brick Wall Busters:...

"Who Discovered DNA? explores the fascinating advances that have been made in the study of DNA and genetics."--

"Who Invented the Automobile? looks back at the history of the automobile-a machine that we could not imagine living without today."--

"Who Discovered Natural Selection? explains how scientists worked out the way in which living things evolve."--

"Who Split the Atom? explores the ways in which scientists uncovered the secrets of atoms-the tiny particles of matter that make up our world."--

"Tsunami! describes how earthquakes and volcanoes cause deadly waves, the devastation they inflict on communities and the environment, and why they are so difficult to predict."--

"In Israel, you will learn that since its foundation in 1948, Israel has undergone dramatic changes. As a Jewish state it has welcomed Jews from all over the world, leading to an eightfold increase in its population. This has benefited the Israeli economy and given Israel a rich and diverse culture, but has also brought challenges."--

"Winding their way through the planet's landscapes and supplying some of its most prosperous cities with fresh water, food, and transportation conduits, rivers and streams have critical ecological and economic significance. As they carve out waterfalls, valleys, canyons, deltas, and a host of other landforms, they also support a diversity of organisms and connect disparate regions. Accompanied by extraordinary color photographs, this volume examines...

"Responsible for managing the body's waste and regulating the balance of water and electrolytes, the kidneys and renal system, in a sense, make up the body's plumbing network. When any part of the system fails or does not function properly, the body may be subject to unnatural concentrations of certain substances, causing illness or even death. This volume examines the various components of the renal, or urinary, system, and the consequences of dysfunction...

"A single cell can be a self-sustaining organism or one of trillions in a larger life form. Though visible only with the help of a microscope, cells are highly structured entities that perform a myriad of functions in every living thing and store critical genetic information. This fascinating volume examines the organization of various types of cells and provides an in-depth look at how cells operate alone to generate new cells and act as part of...