The United States suffered its worst nuclear accident ever 40 years ago today in the near-meltdown of the Unit 2 reactor at Pennsylvania's Three Mile Island nuclear power plant. CBS News Correspondent Bill Rehkopf has the interesting story of how that story broke, in today's "Reporter's Notebook."

CBS News is mourning the loss of one of their own today. CBS News Correspondent Vicki Barker remembers Anna (AH-nuh) Real (RAY-al) on today's "Reporter's Notebook."

CBS News Correspondent Peter King has some thoughts on the issues surrounding NASA's cancellation of the first all-female spacewalk -- in today's "Reporter's Notebook."

Another Parkland Florida high school shooting survivor has committed suicide. Peter King has today's "Reporter's Notebook."

Losing a loved one in a plane crash brings emotional devastation, and lawyers, wanting to make a deal. Correspondent Wendy Gillette has today's "Reporter's Notebook."

Another milestone for the 39th president -- Jimmy Carter. CBS News Correspondent Gary Nunn has more in today's "Reporter's Notebook."

People who smoke pot every day may be increasing the risk of psychosis. Correspondent Jim Taylor explains on today's "Reporters Notebook."

Has Jack the Ripper been unmasked, at last? More from CBS News Correspondent Vicki Barker in today's "Reporter's Notebook."

Christchurch, New Zealand continues to heal after last week's massacre at two mosques that left 50 people dead -- the latest in a seemingly endless number of mass shootings around the globe. CBS News Correspondent Steve Futterman is on the ground in Christchurch with today's "Reporter's Notebook."

When a mass shooting occurs -- and video is available -- you may wonder how a newsroom makes the decision whether or not to air it. Correspondent Jim Taylor explains on today's "Reporter's Notebook."