A monster storm is crippling air travel across the country. More than ten thousand flights have been delayed or canceled. CBS News meteorologist Jeff Berardelli reports. Source

Dr. Harold S. Koplewicz, a child and adolescent psychiatrist and president of the nonprofit Child Mind Institute, describes the neurochemical component that can make adolescents vulnerable to mental illness, and how you communicate with someone experiencing suicidal thoughts like Conrad Roy could make all the difference. Source

The president’s legal team argues the articles of impeachment themselves are “constitutionally invalid on their face.” Source

The president’s legal team argues the articles of impeachment themselves are “constitutionally invalid on their face.” Source

Resources for teens and parents offering important information and support Source

Some of the aid has allegedly been sitting in the warehouse since Hurricane Maria ​struck in 2017. Source

President Trump’s impeachment trial is set to begin in the Senate on Tuesday Source

President Donald Trump’s legal team and House impeachment managers are preparing for the Senate impeachment trial to intensify in the coming week. CBS News correspondent Nikole Killion and Wall Street Journal reporter Siobhan Hughes join CBSN with the latest. Source

The White House defense team and House managers will argue the resolution laying down the rules for the trial, not senators. Source

Prince Harry and Meghan Markle will no longer be official “working members” of the royal family, according to a statement released by Queen Elizabeth II and Buckingham Palace on Saturday. Under the new agreement, the couple will no longer receive public funds for royal duties. CBS News’ Imtiaz Tyab reports from London. Source