Twenty-First Century Books (Tm)

"For of all gainful professions, nothing is better, nothing more pleasing, nothing more delightful, nothing better becomes a well-bred [person] than agriculture."--Marcus Tullius Cicero, ancient...

Attention Deficit Hyperactivity Disorder (ADHD) is the second most impactful condition on young people's health in the United States. But ADHD is a complex disorder and is often misunderstood or...

Attention Deficit Hyperactivity Disorder (ADHD) is the second most impactful condition on young people's health in the United States. But ADHD is a complex disorder and is often misunderstood or...

In a world driven by spending, debt is inevitable. Knowing the ins and outs of borrowing money and establishing credit is not just an important skill for adults. Teens can benefit from understanding...

In a world driven by spending, debt is inevitable. Knowing the ins and outs of borrowing money and establishing credit is not just an important skill for adults. Teens can benefit from understanding...

A thorough and accessible biography of Dr. Katalin Karik?, winner of the 2023 Nobel Prize in Physiology or Medicine, whose hard work pioneering mRNA research led to the COVID-19 vaccines. Her...

Imagine looking out from your 18th floor apartment in the middle of the city and seeing trees right in front of you. In an effort to stem climate change, reduce pollution, combat heat, and protect...

Reading texts or direct messages, communicating through speech or sign language, and viewing artwork are all among the many ways people share news, ideas, and feelings with one another. Communication...

Reading texts or direct messages, communicating through speech or sign language, and viewing artwork are all among the many ways people share news, ideas, and feelings with one another. Communication...

"The discovery both of [geometry] and of the other sciences proceeded from utility."--Proclus Lycius, Greek philosopher, fifth century CE"Geometry is the knowledge of the eternally existent."--Plato,...

Ancient societies built massive monuments, many of which still stand. How did ancient engineers and builders raise up the Great Wall of China or the Great Pyramids of Egypt? They often needed new...

Ancient societies built massive monuments, many of which still stand. How did ancient engineers and builders raise up the Great Wall of China or the Great Pyramids of Egypt? They often needed new...

Immigration has a long history throughout the United States, Canada, and Mexico. Tens of thousands of immigrants arrive to North America every day from countries around the globe. But the first...

Immigration has a long history throughout the United States, Canada, and Mexico. Tens of thousands of immigrants arrive to North America every day from countries around the globe. But the first...

Money may not grow on trees, but with practice anyone can learn how to manage and grow their savings. Knowing how to earn, save, and manage money is not just an important skill for adults. Money is...

Money may not grow on trees, but with practice anyone can learn how to manage and grow their savings. Knowing how to earn, save, and manage money is not just an important skill for adults. Money is...

Racial justice seeks the fair, equal treatment of everyone regardless of their race or ethnicity. Throughout history, people of color in North America have faced racial injustices such as housing...

Racial justice seeks the fair, equal treatment of everyone regardless of their race or ethnicity. Throughout history, people of color in North America have faced racial injustices such as housing...

Finding a job can be overwhelming, even for a seasoned professional. For first-time job applicants, it can be even harder not knowing the ins and outs of job searching and applications. From...

Finding a job can be overwhelming, even for a seasoned professional. For first-time job applicants, it can be even harder not knowing the ins and outs of job searching and applications. From...

The modern LGBTQ community has made significant progress in gaining legal rights and social acceptance compared to decades and centuries ago. However, even as progress has been made, many members of...

For most teens, graduating from high school feels like a finish line. But choosing which path to take next can be overwhelming. It helps to become informed about the options and know how to narrow...

For most teens, graduating from high school feels like a finish line. But choosing which path to take next can be overwhelming. It helps to become informed about the options and know how to narrow...

". . . with the lighter catapults, which had a long range, he drove back those who were constructing the wall along the harbour, and with the ballistae he shook or destroyed the engines of the enemy...

". . . with the lighter catapults, which had a long range, he drove back those who were constructing the wall along the harbour, and with the ballistae he shook or destroyed the engines of the enemy...

Roughly one in three teens in the United States will experience an anxiety disorder. Given the pressures of standardized testing, extracurricular activities, working, and fitting in, this statistic...

Depression affects approximately 280 million people around the world, and it's only becoming more common. As of 2021, 1 in 5 American adolescents had experienced a major depressive episode in the...

Depression affects approximately 280 million people around the world, and it's only becoming more common. As of 2021, 1 in 5 American adolescents had experienced a major depressive episode in the...

Large-scale protests, marches, and demonstrations in cities all over the globe have followed high-profile fatal encounters involving law enforcement and people of color. Citizens have taken to the...

What makes a family? The ties that bind a family together can be complicated. People define family using genetics, legal commitments, physical and emotional connections, a combination of these, or...