The fall of the Berlin Wall in November 1989 was a seminal moment in 20th century history, paving the way for German reunification. Many segments, both large and small, were preserved for ...

The "chemical hearth," dating back to the 1820s, was unearthed by workers doing renovations on the Rotunda at the University of Virginia. It is thought to be one of very few such labs still surviving.

The 'chemical hearth,' dating back to the 1820s, was unearthed by workers doing renovations on the Rotunda at the University of Virginia. It is thought to be one of very few such labs still surviving.

Israeli scientist Daniel Shechtman won the 2011 Nobel Prize in Chemistry “for the discovery of quasicrystals,” the Royal Swedish Academy of Sciences announced.