This week on "Face the Nation with Margaret Brennan," Dec. 18, 2022: Manchin, Cuellar, Gonzales, Gottlieb

At Least 70 Coronavirus Vaccines Are Already in Development, WHO Report Shows

Man Can Change His Pupil Size on Demand, Something Scientists Thought Was ImpossibleBrutal Wounds of The Dead Speak of Ancient Violence in Earth's Driest Desert

Animal Expert Shares 5 Things That Will Help Your Dog Live a Longer, Healthier LifeNot All Cultures Are Equally Mindful of Strangers – Here's How Your Country RanksMore Americans Are Finally Coming Around to Accepting The Science of Evolution

Men And Women Had Different Diets in This Ancient Roman Town Destroyed by a VolcanoMore And More Humans Are Growing an Extra Artery, Showing We're Still Evolving

2,000-Year-Old Offering to Serpent God Found Preserved Under Mexican Pyramid

1,500-Year-Old Lovers Uncovered in China, Locked in an Eternal Embrace25-Year Search For The Source of Consciousness Ends – And Neuroscience Lost This One

Mystery Human Relative Appears to Have Been Butchered And Eaten 1.45 Million Years AgoLeaving Dog Poop on The Street? Scientist Explains Why It's Way Worse Than You Think

Rise of The Sleep Divorce: Do Humans Actually Sleep Better Alone?Hit Songs Do Something to Your Brain, And It Could Be The Future of Music