Books published by publisher Twenty First Century Books

In 2015, the world watched as soccer star Abby Wambach kissed her wife after the US women's World Cup victory. Milwaukee Brewers' minor league first baseman David Denson came out as gay. And Caitlyn (born Bruce) Jenner, an Olympic decathlete, came out as transgender. It hasn't always been this way. Many great athletes have stayed in the closet their whole lives, or at least until retirement. Social attitudes, institutional policies, and laws are slow to change, but they are catching up. Together, athletes, families, educators, allies, and fans are pushing for competitive equity so that every athlete, regardless of identity, can have the opportunity to play at their very best.

Looking for just the right outfit for a big party? Or maybe you want to build some funky shelves for your bedroom. Instead of heading for the mall, consider checking out a thrift store. It's a great way to grab some awesome bargains. Thrift shopping started out as a way for charitable organizations to earn money for their missions by selling a variety of items at reasonable prices. Over the decades, it's become a hot recreational activity for all kinds of people, including celebrities! Thrifting opportunities range from traditional thrift stores, consignment shops, vintage and antique stores, flea markets and garage sales, to auctions, estate sales, and online sites such as eBay, Etsy, and Poshmark. You can find just about anything: clothing, jewelry, accessories, sporting goods, vinyl records, CDs, DVDs, furniture, home goods, books, artwork, toys, gift ideas, even cars. The sky's the limit! Check out Thrift Shopping to discover how to thrift and where to thrift. Learn how to judge quality, when and where to shop for bargains, and how to organize your own yard sale. Get tips for upcycling your thrift-shopping finds for your own personal use or to resell them. With a little imagination and not a whole lot of money, you can find―or make―unique treasures while going green with your shopping habits.

For most of human history, the garments women wore under their clothes were hidden. The earliest underwear provided warmth and protection. But eventually, women's undergarments became complex structures designed to shape their bodies to fit the fashion ideals of the time.In the modern era, undergarments are out in the open, from the designer corsets Madonna wore on stage to Beyoncé's pregnancy announcement on Instagram. This feminist exploration of women's underwear reveals the intimate role lingerie plays in defining women's bodies, sexuality, gender identity, and body image. It is a story of control and restraint but also female empowerment and self-expression. You will never look at underwear the same way again.

Decades of commercial whaling nearly decimated a variety of whales considered a keystone species. Keystone species are indicators of the overall health of Earth's habitats. While whales have made a comeback through an international ban on commercial whaling, they are still threatened with extinction. Global warming, water and noise pollution, and commercial shipping and fishing are among the most serious threats to whale survival. Meet the scientists, citizen scientists, researchers, whale watching guides, and other concerned citizens who are working together to protect whale populations around the globe. Learn about whale biology, habitats, and behavior, and discover more about the high-technology tools that help researchers in their work.

What do giant squids, mantis shrimp, and fireflies have in common? These animals, along with a wide range of creatures, are able to give off light; this is called bioluminescence. Different species use different chemistries to bioluminesce, and they produce their light for a variety of reasons, including communication, hunting, and self-defense. Bioluminescence is a unique and fascinating adaptation found in the animal kingdom. Surprisingly, about half of all known phyla (a classification for animals that share the same body type) contain some bioluminescent species. Scientists don't yet understand all facets of bioluminescence, but they have managed to harness the glow and use it in a myriad of ways. One of the most important applications involves using bioluminescence as a microscope in medical studies. For example, laboratory scientists can create fluorescent malaria parasites to track the path by which the disease is spread from a mosquito to the animal it bites. Bioluminescent proteins are also helping researchers learn more about cancer, HIV and other viruses, and complex neurological processes. In fact, bioluminescent proteins are so useful to twenty-first-century medicine that two groups of scientists, one in 2008 and the other in 2014, were awarded the Nobel Prize in Chemistry for their work with these proteins and related technologies. Even artists and fashion designers use bioluminescence in their work to create glowing, light-sensitive paintings and clothing lines. Author Marc Zimmer, a world-renowned specialist in fluorescent proteins, takes readers on a glowing journey into the frontiers of bioluminescence.