Books published by publisher Twenty-First Century Books TM

In 2015 two powerful telescopes detected something physicists had been seeking for more than one hundred years―gravitational waves from the collision of two black holes. This announcement thrilled the scientific community. Since the eighteenth century, astronomers have predicted the existence of massive, invisible stars whose gravity would not let anything―even light―escape. In the twenty-first century, sophisticated technologies are bringing us closer to seeing black holes in action. Meet the scientists who first thought of black holes hundreds of years ago, and learn about contemporary astrophysicists whose work is radically shaping how we understand black holes, our universe, and how it originated.

Some true crimes reveal themselves in bits and pieces over time. One such case is the Florida School for Boys, a.k.a. the Dozier School, a place where―rather than reforming the children in their care―school officials tortured, raped, and killed them. Opened in 1900, the school closed in 2011 after a Department of Justice investigation substantiated allegations of routine beatings and killings made by about 100 survivors. Thus far, forensic anthropologist Dr. Erin Kimmerle and her team from the University of South Florida have uncovered fifty-five sets of human remains. Follow this story of institutional abuse, the brave survivors who spoke their truth, and the scientists and others who brought it to light.

A rapper spits rhymes into a microphone. A DJ scratches a record back and forth against a turntable needle. Fans' feet stomp along to a stiff beat. These are the sounds of hip-hop. Hip-hop music busted out of New York City in the 1970s. Many young African Americans found their voices after stepping up to the mic. In the decades afterward, rappers and DJs took over the airwaves and transformed American music. In the twenty-first century, hip-hop is a global sensation. Learn what inspired hip-hop's earliest rappers to start rhyming over beats, as well as the stories behind hip-hop legends such as Run-D.M.C., 2Pac, Lauryn Hill, and Jay-Z. Follow the creativity and the rivalries that have fueled everything from party raps to songs about social struggles. And find out how you can add your own sounds to the mix!

Containing 97 percent of Earth's water supply, the ocean plays a huge role in regulating global temperatures, supporting plant and animal life, and contributing to the livelihoods of millions of people. But in spite of all this, the ocean remains drastically unexplored, and the details of its impact on human lives aren't fully understood.Scientists from around the world are realizing that to address issues plaguing the ocean, such as dead zones, coral bleaching, and climate change, we need to better understand this incredible, unique feature of our planet. With a range of impressive, cutting-edge technologies at their disposal, oceanographers have set out to measure, sample, and analyze at every turn. Every day, mysteries about the ocean are being solved, and every day, new questions come to light. The more scientists learn, the better they are able to answer these new questions.What lies in the deep? And who is at the forefront of these exciting discoveries? The scientists and research included in this book shed light on the most pressing issues currently facing oceanographers and point us in the right direction to solving these challenges.

Throughout history, several deadly pandemics brought humanity to its knees, killing millions, and recent outbreaks of Ebola and Zika took coordinated international efforts to prevent them from spreading. Learn about factors that contribute to the spread of disease by examining past pandemics and epidemics, including the Bubonic Plague, smallpox Ebola, HIV/AIDS, and Zika. Examine case studies of potential pandemic diseases, like SARS and cholera, and find out how pathogens and antibiotics work. See how human activities such as global air travel and the disruption of animal habitats contribute to the risk of a new pandemic. And discover how scientists are striving to contain and control the spread of disease, both locally and globally.

Japan. March 11, 2011. 2:46 P.M. The biggest earthquake in Japan's history—and one of the world's five most powerful since 1900—devastated the Tohoku region, 320 kilometers (200 miles) northeast of Tokyo. It triggered a huge tsunami that left crippling damage in its wake. More than 13,000 people drowned, and thousands of buildings and homes were reduced to rubble. As people assessed the damage, they made the most frightening discovery of all: the Fukushima #1 nuclear power plant was seriously damaged and three of its six reactors were heading for meltdowns. Workers tried desperately—but unsuccessfully—to save them. Explosions and fires released radioactivity into the air. Within days the Japanese government declared a 20-kilometer (12-mile) evacuation zone. The future of the plant, the long-term health of those exposed to radiation, and the effects on the environment remained uncertain. Learn more about this massive catastrophe as Dr. Fred Bortz examines both the human tragedy and the scientific implications of the nuclear meltdown. Compare this disaster to similar nuclear events in the United States and in Ukraine, and move ahead with Dr. Bortz as he explores the global debate about the future of nuclear power and alternative sources of energy.

A fish that walks on land, a frog that makes its own sunscreen, and an insect that can become invisible? Whether to avoid predators, to stalk prey, or to withstand extreme temperatures, Earth's creatures have evolved some outrageous features and tricks to ensure survival. For example, did you know that the geoduck (nope, it's not a duck, it's a clam) can live as long as 160 years? And that the aye-aye, a nocturnal primate, uses echolocation and a long, spindly finger to find and dig up food? Or that in its deep-ocean habitat, the vampire squid uses bioluminescence to startle predators? These are among the many animals that show evolution and adaptation at work.

While most people say they believe in equal rights, the word feminism—America's new F-word—makes people uncomfortable. Explore the history of US feminism through pioneers such as Elizabeth Cady Stanton, Betty Friedan, Shirley Chisholm, and Gloria Steinem. Meet modern leaders such as Rebecca Walker and Julie Zeilinger, who are striving to empower women at work, in government, at home—and in cultural and personal arenas. Learn from interviews with movement leaders, scholars, pop stars, and average women, what it means to be a feminist—or to reject it altogether. After reading this book, readers will be able to respond to "Am I a feminist?" with a confident, informed voice.

Over the past 50 years, scientists have made incredible progress in the application of genetic research to human health care and disease treatment. Innovative tools and techniques, including gene therapy and CRISPR-Cas9 editing, can treat inherited disorders that were previously untreatable, or prevent them from happening in the first place. You can take a DNA test to learn where your ancestors are from. Police officers can use genetic evidence to identify criminals―or innocents. And some doctors are using new medical techniques for unprecedented procedures. Genomics: A Revolution in Health and Disease Discovery delves into the history, science, and ethics behind recent breakthroughs in genetic research. Authors Whitney Stewart and Hans Andersson, MD, present fascinating case studies that show how real people have benefitted from genetic research. Though the genome remains full of mysteries, researchers and doctors are working hard to uncover its secrets and find the best ways to treat patients and cure diseases. The discoveries to come will inform how we target disease treatment, how we understand our health, and how we define our very identities.