Research reveals that as we age, brain waves become unsynchronized. Because of that, the brain fails to keep new memories while we sleep. The study also points to a new treatment for boosting brain power among the elderly. Matthew Walker, who co-authored the study and released a new book called “Why We Sleep: Unlocking The Power of Sleep and Dreams,” joins “CBS This Morning” to discuss the findings. Source

Music mogul Russell Simmons is strongly denying new accusations that he raped three women decades ago. The New York Times reports the alleged assaults took place at Simmons’ apartment in the ’80s and ’90s. New York Times culture reporter Melena Ryzik who co-authored the article joins “CBS This Morning” to discuss the allegations. Source

A new type of ultrasound scan is being tested to see if it’s as effective as mammograms in detecting breast cancer, especially in women with dense breast tissue. CBS News’ Danielle Nottingham reports. Source

Omarosa Manigault Newman, a Trump administration official and former “Apprentice” star, plans to leave the Trump administration next month “to pursue other opportunities,” the White House announced Wednesday. Source

Smart home devices have become some of the most popular tech products on the market this year. Lindsey Turrentine, editor-in-chief of CNET.com, joins CBSN to discuss the top products that can change your living experience. Source

For the first time in 25 years, Alabama has elected a Democrat as senator. Doug Jones narrowly defeated Republican Roy Moore, who was accused of sexual misconduct with teenage girls. CBS News political director Steve Chaggaris joins CBSN with analysis of how the election played out. Source

Dyson is a company known for its bold designs and unique reinventions of common household products like the world’s first bagless vacuum cleaner, high-velocity hand dryers and bladeless fans. Sir James Dyson, the company’s founder and chief engineer, joins “CBS This Morning” to discuss why they felt it was necessary to build a “demo” store in New York City, what’s at the heart of their technology, and why he wants to get in the car business. Source

Joe Biden’s son, Beau, died more than two years ago after a battle with brain cancer. The tragedy came as the former vice president faced the decision of whether to run for president in 2016. In Part II of his interview on “CBS This Morning,” Biden discusses his new book, “Promise Me, Dad: A Year of Hope, Hardship, and Purpose,” which chronicles the challenging time, what he’s learned along the way, and the one piece of advice he’d give to every young boy. He also outlines his concerns about President Trump’s foreign policy strategy and handling of North Korea. Source

Five years after the mass shooting that shook Newtown, Connecticut, and the country at large, CBSN correspondent Christina Ruffini spoke to residents of Colorado Springs about where they stand on guns. Source

Combined, award-winning actors Meryl Streep and Tom Hanks have appeared in more than 100 films. But “The Post” marks the first time they are on screen together. In the movie, Streep plays Katharine Graham, the publisher of the Washington Post, and Hanks portrays legendary editor Ben Bradlee. The plot centers on the paper’s famous and difficult decision to publish top secret government information from the Pentagon Papers in 1971. Streep and Hanks join “CBS This Morning” to discuss how the film resonates today. Source