Books published by publisher Twenty-First Century Books TM

The United Nations supports a compelling solution to world hunger: eat insects! Explore the vast world of unexpected foods that may help solve the global hunger crisis. Weeds, wild plants, invasive and feral species, and bugs are all food for thought. Learn about the nutritional value of various plant and animal species; visit a cricket farm; try a recipe for dandelion pancakes, kudzu salsa, or pickled purslane; and discover more about climate change, sustainability, green agriculture, indigenous foods, farm-to-table restaurants, and how to be an eco-friendly producer, consumer, and chef. Meet average folks and experts in the field who will help you stretch your culinary imagination!

"Takes readers through the life cycle of bees, their important role in pollination, and presents reasons for their decline... An important resource for all libraries." --Booklist, starred reviewApples, blueberries, peppers, cucumbers, coffee, and vanilla. Do you like to eat and drink? Then you might want to thank a bee.Bees pollinate 75 percent of the fruits, vegetables, and nuts grown in the United States. Around the world, bees pollinate $24 billion worth of crops each year. Without bees, humans would face a drastically reduced diet. We need bees to grow the foods that keep us healthy.But numbers of bees are falling, and that has scientists alarmed. What's causing the decline? Diseases, pesticides, climate change, and loss of habitat are all threatening bee populations. Some bee species are teetering on the brink of extinction."Accessible and concise" (Kirkus), this book will teach you about the many bee species on Earth -- their nests, their colonies, their life cycles, and their vital connection to flowering plants. Most importantly, you'll discover what you can do to help."If we had to try and do what bees do on a daily basis, if we had to come out here and hand pollinate all of our native plants and our agricultural plants, there is physically no way we could do it. . . . Our best bet is to conserve our native bees." --ecologist Rebecca Irwin, North Carolina State University

Soon after the sexual misconduct allegations against film producer Harvey Weinstein became public in late 2017, the #MeToo movement went viral, opening up an explosive conversation about rape culture around the globe. In the US, someone is sexually assaulted every 98 seconds. More than 320,000 Americans over the age of twelve are sexually assaulted each year. Men are victims too. One in thirty-three American men will be sexually assaulted or raped in his lifetime. Yet only 3 percent of rapists ever serve time in jail. Learn about the patriarchal constructs that support rape culture and how to dismantle them: redefining healthy manhood and sexuality, believing victims, improving social and legal systems and workplace environments, evaluating media with a critical eye, and standing up to speak out. Case studies provide a well-rounded view of real people on all sides of the issues.

How close are we to having another worldwide health crisis? Epidemiologists predict that another pandemic is coming―one that could kill hundreds of millions of people. Learn about factors that contribute to the spread of disease by examining past pandemics and epidemics. Examine case studies of potential pandemic diseases, and discover how scientists strive to contain and control the spread of disease both locally and globally. See how human activities such as global air travel and the disruption of animal habitats contribute to the risk of a new pandemic. And investigate the challenges we face with antibiotic-resistant bacteria and mutating viruses. Can scientists control the spread of disease and prevent the next pandemic?

In the twenty-first century, because of climate change and other human activities, many animal species have become extinct, and many others are at risk of extinction. Once they are gone, we cannot bring them back―or can we? With techniques such as cloning, scientists want to reverse extinction and return lost species to the wild. Some scientists want to create clones of recently extinct animals, while others want to make new hybrid animals. Many people are opposed to de-extinction. Some critics say that the work diverts attention from efforts to save species that are endangered. Others say that de-extinction amounts to scientists "playing God." Explore the pros and cons of de-extinction and the cutting-edge science that makes it possible.

Experiment: A child is deliberately infected with the deadly smallpox disease without his parents' informed consent. Result: The world's first vaccine. Experiment: A slave woman is forced to undergo more than thirty operations without anesthesia. Result: The beginnings of modern gynecology. Incidents like these paved the way for crucial, lifesaving medical discoveries. But they also harmed and humiliated their test subjects. How do doctors balance the need to test new medicines and procedures with their ethical duty to protect the rights of humans? Take a journey through some of history's greatest medical advances―and its most horrifying medical atrocities―to discover how human suffering has gone hand in hand with medical advancement.

As the planet's human population explodes, so does the demand for water. About one out of every nine people in the world does not have access to safe drinking water, while one out of every five―almost 1.5 billion humans―lives in a region where water demand is outstripping supply. But as demand grows, supplies do not. Climate change has led to severe drought, flooding, and massive storms in key agricultural areas of the world. Industrial and agricultural water pollution threatens public health around the world. Environmental protection measures are not keeping up with energy-production technologies such as fracking and the corn-for-fuel market, all of which affect water usage rates and safety. Both developed and undeveloped areas of the world face challenges with water-delivery infrastructure. For example, undeveloped nations lack even the most basic water-delivery systems. Millions of global citizens are without sanitation altogether, polluting waterways with raw sewage. In the developed world, water-delivery infrastructures are aging and wasteful. Domestic and industrial overconsumption of water resources draws down supply capacity, depleting Earth's freshwater resources at an alarming rate. And, in the last few decades, private corporations have begun to take over municipal water delivery, buying the rights to freshwater supplies and selling bottled water, all for large profits. As the cost of clean water rises, many people can't afford the water they need for everyday use. Competition for clean water is increasing, and the stakes couldn't be higher. Running Dry investigates some tough questions. In a crowded world with limited water supplies, will we be able to deliver safe, clean water to an increasingly thirsty world? Can governments, businesses, and individuals work together to clean up and protect Earth's water resources? Are water conservation strategies enough to ensure a water-rich future? Or will we run dry?

According to a UN tally, more than 1 million people fled violence and persecution in 2015. Of these, more than half were children. Thousands died along the way. The Syrian civil war as well as armed conflicts in Nigeria, Afghanistan, Yemen, Somalia, and the Central African Republic contributed to the continuing exodus of people into Europe and North America. Learn more about these modern mass exoduses, what is fueling them in the 21st century, how nations are addressing the crises, how refugees contribute to and strain communities, and what kinds of solutions could help. Along the way, you'll meet actual refugees and the people who are trying to help.

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.

Suicide is among the top three causes of death for young people ages 15 to 24. In fact, this global epidemic claims 41,000 lives per year in the United States alone. Suicide touches people of all ages—from those who consider and attempt suicide to those who lose a loved to suicide. Yet silence often surrounds these deaths and makes suicide difficult to understand. Looking beyond common myths and misconceptions, author Connie Goldsmith examines common risk factors and covers warning signs, ways to reach out to a suffering loved one, and precautions that can save lives. And survivors' personal stories offer honest examinations of both grief and hope.

Scientists are on the verge of a revolution in biomedical engineering that will forever change the way we think about medicine, even life itself. Cutting-edge researchers are working to build body organs and tissue in the lab. They are developing ways to encourage the body to regenerate damaged or diseased bone and muscle tissue. Scientists are striving to re-route visual stimuli to the brain to help blind people see. They may soon discover methods to enlist the trillions of microbes living in our bodies to help us fight disease. Learn about four strands of bioengineering―tissue engineering and regenerative medicine, neuroengineering, microbial science, and genetic engineering and synthetic biology―and meet scientists working in these fields.