Scientists Find Surprising Core in Earth’s Inner Core

A new study by a team of scientists from the U.S. and China suggests Earth’s innermost core might have a core of its own. WSJ’s Monika Auger reports. Photo: Lachina Publishing Services Subscribe to the WSJ channel here: Visit the WSJ channel for more video: More from the Wall Street Journal: Visit : Follow WSJ on Facebook: Follow WSJ on Google : w