Russia's standoff with Ukraine over Crimea seems to have stabilized for the moment. But tensions remain high, and not just in Ukraine. Many in Eastern Europe see parallels between the current situation and the days leading up to World War II.
Danish and Czech scientists are working to solve a centuries-old mystery involving 16th century astronomer Tycho Brahe. The mystery is about his death. Scientists dug up Brahe's bones this week to search for clues. But where?