This Week in Science: A moving country, a cosmic first, and much more!We start with a giant earthquake that may have moved Japan.A new analysis reveals a 2011 earthquake sent a seismic wave all the way down to Earth's core and back again, and it may have shifted parts of the country.Also this week:
Liking onions could reveal genetic clues about future health
We may have detected the first signature of a black hole's event horizon
Younger adults appear biologically older than earlier generations
A mystery around an ancient human species deepens
