If books could kill … scientists in Denmark have found high levels of arsenic in three books from the 16th and 17th centuries. “We were looking for writing which shows up as ink may contain copper or iron or calcium, however, the moment we put the X-ray beam on the green surface we saw the fantastic high amounts of arsenic.”
Scientists used micro X-ray fluorescence technology, which is widely used to analyze the chemical properties of pottery and paintings. This analysis revealed that the green pigment on the books’ covers is arsenic.
Researchers posted online this week more than 250 videos of decades-old U.S. nuclear weapons tests.
California’s Lawrence Livermore National Laboratory, which has spent more than five years finding, restoring and declassifying the footage, recently published its latest batch to YouTube.
What would your continent look like up to 750 million years ago? Check out this interative globe of ancient earth, it even shows the supercontinent Pangea at 240 million years ago.
Source: Ancient Earth Interactive Globe
Utah girl, 11, is a full-time college student. Twelve credits of trigonometry, art, information literacy, and music are no match for Catalina “Catty” Lemmon, an 11-year-old who not only takes college classes, but also excels in them.
Stephen Hawking has taken his place among Britain’s greatest scientists with the burial of his ashes in Westminster Abbey