A wharf in Santa Cruz, California, partially collapsed Monday, sending three workers inspecting the wharf into the ocean. At least one person was killed in a separate incident and two others are missing as a result of dangerous surf along the West Coast. Elise Preston has more. At least one person was killed and six others injured when a boat exploded in a marina in Fort Lauderdale, Florida. Three people suffered traumatic injuries. Cristian Benavides reports. Former President Bill Clinton was discharged from a Washington, D.C., hospital on Tuesday after being treated for the flu. Parts of the Northeast were hit with a light dusting of snow on Christmas Eve. CBS Meteorologist Bill Kelly takes a look at who will be getting snow on Christmas Day. President-elect Donald Trump is threatening to take over the Panama Canal unless it cuts the price it charges for ships to pass through the key shipping lane. Trump is also again floating the idea of buying Greenland, which he also suggested during his first term. Kelly O'Grady reports. The Mega Millions jackpot has soared to an estimated $1 billion for the drawing on Christmas Eve. It's only the seventh time in the game's history the jackpot has hit that mark. Dave Malkoff has more. Pope Francis ushered in the start of a Jubilee year at St. Peter's Basilica on Christmas Eve. The Vatican has spent years prepping for the once every quarter-century event. Chris Livesay has the story.

Powerful thunderstorms forced ground stops that delayed dozens of flights at Dallas airports Thursday, while stormy weather downed trees and knocked out power to thousands of customers in Oregon and Washington. Kati Weis reports from Houston. There are new details about what may have caused a passenger jet that was headed from Azerbaijan to Russia to crash in Kazakhstan. A U.S. official told CBS News that there are preliminary indications that a Russian anti-aircraft system may have hit the plane, which was carrying 67 people. Several dozen people died in the crash, but dozens also survived. Chris Livesay has the latest. At a FedEx shipping hub in Anchorage, Alaska, employees can sort up to 80,000 packages a day during the holidays. And as they're dealing with a last wave of Christmas gifts getting ready to ship out this week, they're also dealing with a new wave of gifts that are being returned. Kris Van Cleave takes an inside look at the process. Tom Homan, President-elect Donald Trump's incoming "border czar," told the Washington Post in an interview this week that Trump's new administration plans to revive the controversial practice of detaining migrant families and giving undocumented parents the choice of leaving their U.S.-born children behind or having the children deported with them. Lilia Luciano reports. Research suggests the human brain is not wired to multitask on complicated tasks, and experts say it can cause more damage to our wellbeing than we realize. Dr. Jon LaPook explains. The Toy Nest in Falls Church, Virginia, is a toy library that works on a membership program. The moms who buy-in say it allows them to cut down on toy waste, while saving money and adding variety. Natalie Brand explains how the novel idea works.