Celebrating the building blocks of science
National Periodic Table Day, observed annually on February 7, honors one of the most significant achievements in scientific ...
Meteorite discovery challenges long-held theories on Earth's missing elements
Understanding where Earth's essential elements came from—and why some are missing—has long puzzled scientists. Now, a new ...
Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...