Osteoarthritis impacts more than 32.5 million American adults, according to the CDC. New research published in the Proceedings of National Academy of Sciences suggests an innovative machine learning algorithm could help detect the condition three years before any symptoms or noticeable bone damage appear. Dr. Shinjini Kundu, a computer scientist and resident physician at Johns Hopkins Hospital in Baltimore, joins CBSN to discuss the findings of her research. Source

While serving in the Army during World War II, Bernard Brown wrote 246 letters to the woman who would become his future wife. The letters were packed away in a box until his daughter found them and encouraged him to publish them in a book. Chip Reid reports. Source

The second-largest movie theater chain in the U.S. is temporarily closing its doors again, affecting some 40,000 workers. Regal’s parent company announced this morning it will shut down its 536 theaters in America indefinitely, starting on Thursday. Regal had reopened some locations in August after closing for at least five months during the pandemic. Source

Images on social media show masses of sea life washed up on the beaches of Kamchatka, and water tests found high levels of oil products and other compounds. Source

One of the drugs President Trump is receiving to treat his coronavirus infection is dexamethasone, a steroid typically used in patients with severe cases of the illness. Emergency care physician Dr. Ron Elfenbein joined CBSN to discuss the implications of the treatment, and what could come next. Source

Grammy award-winning singer and songwriter Lenny Kravitz joins “CBS This Morning” to discuss his new memoir “Let Love Rule,” on sale October 6. It takes readers through the first 25 years of his life, from birth to the release of his first album. In it, he details his experiences growing up biracial and finding salvation in music. Source

The latest CBS News Battleground Tracker​ shows Joe Biden is still ahead in Pennsylvania​. Source

“The marketplace, by itself, cannot resolve every problem,” Pope Francis wrote in a new encyclical on Sunday. Source

The countries have fought for years over a breakaway region, but this time, the U.S. isn’t helping to mediate, and other major powers are picking sides. Source

Many foreign leaders sent best wishes to the president, but China’s official state media mocked his diagnosis after months of Mr. Trump downplaying the pandemic. Source