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"Star Trek'"s tricorder? Now, there are CT scans, MRIs and ultrasounds

Special counsel's Russia investigation cast a wide net for documents. Could they include the Spicer files?

According to a new medical research study, fetal death rates increased by 58 percent in Flint after the city switched its water source in April 2014

"Star Trek: Discovery" is premiering this Sunday on CBS. Dr. Jon LaPook explains how well the "Star Trek" franchise has done over the years at predicting the future of medicine.

A new study out Thursday blames contaminated water in Flint, Michigan for lower fertility rates and an increase in infant mortality. Dean Reynolds reports.

President Trump wants to renegotiate the 2015 agreement to freeze Iran's nuclear program in exchange for lifting financial sanctions. He wants a long-term deal with more stringent terms. Margaret Brennan reports.

Hurricane Maria inflicted damage on 80 percent of homes in Puerto Rico. In the coastal city of Cantano, residents forged through flooded streets, heading to the only open grocery store. In the small town of Toa Baja, hundreds of residents were rescued by the National Guard. David Begnaud reports.

The death toll in Mexico rose Thursday to at least 273. More than two days after the magnitude 7.1 earthquake reduced buildings to rubble, survivors were still being rescued. Manuel Bojorquez reports.

A study that came out Thursday said former football star Aaron Hernandez had a severe form of CTE, a degenerative brain disease found in people who have received repeated blows to the head. Hernandez took his life earlier this year in prison. James Brown reports.

The special counsel's Russia investigation has cast a wide net of documents. Major Garrett reports on whether they could include former White House press secretary Sean Spicer's documents as well.

Facebook promised greater cooperation in the investigation of Russian meddling in the U.S. election. Founder Mark Zuckerberg said the company will turn over to Congress thousands of ads that were posted on Facebook, and later linked to Russia. He also promised to make political ads on Facebook more transparent, disclosing who paid for them. John Blackstone reports.

Young girl was rushed to the hospital Wednesday after being hit by a foul ball that flew off Todd Frazier's bat

Some high schools in Missouri, Maine and New Jersey have cancelled or cut short their football seasons; Squads in Michigan are depleted due to lack of interest

First responders' work has been at times frantic, at times painstaking in the aftermath of a 7.1-magnitude earthquake

There's a desperate race against time to stop the hepatitis A virus from spreading, especially among the area's homeless and drug users

Investigation reveals that getting ingredients needed too make a simple bomb has become easier than ever

Lines are long and constant at pop-up clinics around San Diego, where hundreds of people have waited to get free hepatitis A vaccines. There's a desperate race against time to stop the hepatitis A virus from spreading. Mireya Villarreal reports.

A new study from Boston University found that playing tackle football before the age of 12 dramatically increases the risk of brain problems later in life. Dean Reynolds reports that many moms and dads have already blown the whistle on football.

British police have made two more arrests in Friday's subway bombing. Five people are now in custody. Thirty people were hurt when the bomb partially exploded. And now, Amazon is reviewing procedures after it was revealed its website may unwittingly give tips to would-be bombers. Mark Phillips reports.

The Graham-Cassidy health care bill would keep Obamacare's taxes in place, but turn most of the revenues over to the states to come up with their own health care systems. Former President Obama argued Wednesday that some states might allow insurers to once again charge more for pre-existing conditions. Nancy Cordes reports.