Science reveals secrets of a mummy's portrait

How much information can you get from a speck of purple pigment, no bigger than the diameter of a hair, plucked from an Egyptian portrait that's nearly 2,000 years old? Plenty, according to a new study. Analysis of that speck ...

Scientists finally confirm vitamin B1 hypothesis from 1958

Chemists have confirmed a 67-year-old theory about vitamin B1 by stabilizing a reactive molecule in water—a feat long thought impossible. The discovery not only solves a biochemical mystery, but also opens the door to greener, ...

page 9 from 40