James Roland

Did you know that Pluto has glaciers? In 2015, the spacecraft New Horizons took the first close-up photos of the distant dwarf planet. Pluto was more fascinating than scientists ever imagined! Read more about what scientists have learned about Pluto.

Delve into the life and career of Ruth Bader Ginsburg, the second woman justice appointed to the US Supreme Court. Ginsburg endured great adversity-from anti-Semitism to gender discrimination-to achieve her Supreme Court appointment. Follow her journey to Supreme Court Justice, and learn how she became a national spokesperson for treating people equally under the law. This revised edition uses primary and secondary sources, including quotes and childhood...

How do transistors control electric current? How are they used in our electronic devices? Discover how transistors were developed, how different types act differently, and explore where transistors may be taking technology in the future!

"High school students everywhere contend with the same stress about their future plans once they graduate from high school. While college and career planning can feel overwhelming and stressful, it can also be an exciting experience in which students learn about what they want-and don't want-in their future. Doing your research and learning about careers and college options while you're still months or years away from having to fill out applications...