27K views · 217 reactions | Facing concerns about his own family history of Alzheimer's, CNN chief medical correspondent Dr. Sanjay Gupta visits preventive neurologist Dr. Richard Isaacson to have his own risk for dementia assessed in the CNN documentary "The Last Alzheimer's Patient." Watch the full documentary on CNN's "The Whole Story" premiering on May 19 at 8p ET/PT and streaming on MAX on June 18. | CNN | Facebook

4.8M views · 1.4K reactions | Donald Trump has made history as the first sitting US president to set foot on North Korean soil. He and North Korean leader Kim Jong Un shook hands at the demilitarized zone, before both leaders stepped into North Korea. Trump said that "stepping across that line was a great honor," and said he'd invite Kim to the White House: cnn.it/2Nm3qiq | CNN Replay | Facebook

366K views · 10K reactions | "Tonight, she continues to make...