Trash Gobbling Robots Cleaning Lake Tahoe and Beyond! Science World's oldest periodic table chart emerges from obscurity Germanium, discovered in 1886, is not included on the chart.

As part of their chemistry class, seventh-graders at Cohen Hillel Academy in Marblehead created periodic-table windsocks, integrating the design process with a multi-faceted approach to ...

This video excerpt from NOVA's "Hunting the Elements" looks at how early chemists developed the periodic table.

The orderly periodic table—often printed with just the chemical symbol and atomic weight of its 118 elements—doesn't quite manage to convey to nonscientists the richness of what these substances bring ...

Explore The History of The First Periodic Table Created in 1869 by Dmitri Mendeleev. Plus, Learn About Julius Lothar Meyer and Other Scientific Discoveries.