Books published by publisher Twenty-First Century Books

On April 22, 1970, an estimated twenty million people held in a teach-in to show their support for environmental protections. This new celebration, Earth Day, brought together previously fragmented issues under the same banner. It was the largest nationwide event ever, and lawmakers took notice. But one day didn't change everything. Fifty years after the first Earth Day, climate change remains a dire concern. The divide between political parties continues to widen, and environmental policy has become an increasingly partisan issue. The spread of disinformation has also made climate change a debatable idea, rather than scientific fact. A new generation of advocates continue the fight to make environmental policy a top priority for the United States and for nations around the globe. "Our goal is an environment of decency, quality, and mutual respect for all human beings and all other living creatures . . . Our goal is a decent environment in its broadest, deepest sense."―Gaylord Nelson, Earth Day founder "[T]he potential consequences are certainly major in their impact on mankind. Now is the time. The research is clear. It is up to us now to summon the political will."―Robert Walker, US Representative from Pennsylvania "There's always a perception that business and industry and conservation groups . . . don't agree on anything. . . . [W]e can come together to demonstrate that we might be looking at it from different sides, but the outcome is the same."―Doug Miell, consultant, Georgia Chamber of Commerce

About 4,000 unidentified deceased persons are discovered in the United States every year. But forensic experts are successful in identifying about 3,000 of those bodies within a year. In Forensic Identification: Putting a Name and Face on Death, forensic anthropologist Dr. Elizabeth A. Murray takes readers into the morgues and forensic labs where experts use advanced technology to determine the identities of dead bodies whose names are not known because the bodies are mutilated, decomposed beyond recognition, or cut into pieces. She also explores what happens to the bodies and remains that belong to people who have been missing for so long that law enforcement and forensic files are no longer active. Through a wide range of fascinating scientific methods―including DNA testing, facial reconstruction, dental records, blood analysis, fingerprinting, and X-rays―forensic specialists work to piece together the stories that will give names back to the unknown dead and missing. Come along to watch the experts do their amazing work.

In 1946, as part of the Cold War arms race, the US military launched a program to test nuclear bombs in the Marshall Islands of the Pacific Ocean. From 1946 until 1958, the military detonated sixty-seven nuclear bombs over the region's Bikini and Enewetak Atolls. The twelfth bomb, called Bravo, became the world's first nuclear disaster. It sent a toxic cloud of radiation over Rongelap Atoll and other nearby inhabited islands. The testing was intended to advance scientific knowledge about nuclear bombs and radiation, but it had much more far-reaching effects. Some of the islanders suffered burns, cancers, birth defects, and other medical tragedies as a result of radiation poisoning. Many of the Marshallese were resettled on other Pacific islands or in the United States. They and their descendants cannot yet return to Bikini, which remains contaminated by radiation. And while the United States claims it is now safe to resettle Rongelap, only a few construction workers live there on a temporary basis. For Bombs over Bikini, author Connie Goldsmith researched government documents, military film footage, and other primary source documents to tell the story of the world's first nuclear disaster. You'll meet the people who planned the test operations, the Marshall Islanders who lost their homes and suffered from radiation illnesses, and those who have worked to hold the US government accountable for catastrophically poor planning. Was the new knowledge about nuclear bombs and radiation worth the cost in human suffering? You decide.

After the 1986 Chernobyl nuclear explosion in Ukraine, scientists believed radiation had created a vast and barren wasteland in which life could never resurface. But the Dead Zone, as the contaminated area is known, doesn't look dead at all. In fact, wildlife seems to be thriving there. The Zone is home to beetles, swallows, catfish, mice, voles, otters, beavers, wild boar, foxes, lynx, deer, moose―even brown bears and wolves. Yet the animals in the Zone are not quite what you'd expect. Every single one of them is radioactive. In Chernobyl's Wild Kingdom, you'll meet the international scientists investigating the Zone's wildlife and trying to answer difficult questions: Have some animals adapted to living with radiation? Or is the radioactive environment harming them in ways we can't see or that will only show up in future generations? Learn more about the fascinating ongoing research―and the debates that surround the findings―in one of the most dangerous places on Earth.

What would you do if you found an alligator in your garage? Or if you spotted a mountain lion downtown? In cities and suburbs around the world, wild creatures are showing up where we least expect them. Not all of them arrive by accident, and some are here to stay. As the human population tops seven billion, animals are running out of space. Their natural habitats are surrounded―and sometimes even replaced―by highways, shopping centers, office parks, and subdivisions. The result? A wildlife invasion of our urban neighborhoods. What kinds of animals are making cities their new home? How can they survive in our ecosystem of concrete, steel, and glass? And what does their presence there mean for their future and ours? Join scientists, activists, and the folks next door on a journey around the globe to track down our newest wild animal neighbors. Discover what is bringing these creatures to our backyards―and how we can create spaces for people and animals to live side by side.

3D printing was once only known through science fiction, such as Star Trek, the popular 1960s TV series. But inventors and engineers on Earth began experimenting in real life with 3D printing to find faster ways to develop and build prototypes, using computers, ultraviolet lasers, and printable materials. Now, there are many innovative uses for 3D printing. Yet 3D printing has drawbacks. Chemicals used in 3D printing can be toxic, and legal experts are not sure how to protect 3D printing inventions so that others do not steal ideas. Learn how 3D printing works and how we can keep up with the safety, health, and legal challenges that lie ahead.