Plate tectonics has been a centerpiece of earth science for decades, but Earth didn't always have tectonic plates. As the planet coalesced from cosmic dust approximately 4.6 billion years ago, it had a single, unbroken lithosphere. So how and when did the plates break apart and begin their seemingly never-ending round of musical chairs?
The Hazards Caucus Alliance, a network that supports the Congressional Hazards Caucus, hosted a briefing on April 6 about how geologic and hazards mapping and monitoring are used to prepare and protect communities from natural hazards.
The National Academies of Science, Engineering and Medicine Board on Earth Sciences and Resources (BESR) is hosting a free webinar on what is known about Cascadia's earthquake hazards. You can register to participate here. Information about the event is included below.