An account of the January 1919 molasses tank explosion in Boston, Massachusetts, seeks to uncover why the tank blew up and who was to blame through primary sources and archival photographs that show t
Could there be other planets in the universe similar to those in our solar system? Yes! Scientists have discovered worlds circling distant stars. They call these objects exoplanets. In this book, you'
How can robots help us explore space? A probe called New Horizons is zooming through the outer solar system. It's headed to Pluto. It and other space robots can go where people cannot survive. In this
An account of the January 1919 molasses tank explosion in Boston, Massachusetts, seeks to uncover why the tank blew up and who was to blame through primary sources and archival photographs that show t
Here is the story of extraordinary leader Alice Paul, from the woman suffrage movement—the long struggle for votes for women—to the ?second wave,” when women demanded full equality with men. Paul made
