Videos The Cascadia subduction zone is a convergent plate boundary that stretches from British Columbia to California. Experts say a shift in the plates will cause a major natural disaster for people living along the west coast. Articles You May Like Mark Zuckerberg arrives at court for social media trial Mandelson’s Epstein emails are ‘vile’ ‘What’s your reaction to your brother’s arrest?’ Why is this pasta so exclusive? Epstein survivor: ‘My recruiters laughed as he sexually assaulted me’