The measles, mumps and rubella vaccine is 97% effective, so why are we seeing so many outbreaks? CNN's Chief Medical Correspondent Dr. Sanjay Gupta explains why the contagious disease is spreading.

Sibling estrangement, such as the rift between Prince Harry and Prince William, isn't uncommon. Here's how to know whether your sibling relationship is worth repairing or ending, according to psychologist Joshua Coleman.

Paul Alexander, who spent the vast majority of the past 70 years in an iron lung and defied expectations by becoming a lawyer and author, died at the age of 78, according to his brother Philip Alexander. In 2022, Alexander spoke to CNN about his life.

Reset your year with green dishes filled with fresh herbs and a clean home for the Persian New Year, also known as Nowruz.

Oprah Winfrey talks with Gayle King and Charles Barkley about why she decided to turn to weight-loss drugs after years of focusing on diet and exercise.

CNN's Rosemary Church talks to Yale's Dr. Gerard Sanacora about ketamine therapy, a medical treatment for depression and other mental health issues, that Elon Musk recently revealed he uses.

Every year 40 athletes are chosen to race in The Barkley Marathons, and in the last three decades, only 15 people have successfully crossed the finish line

An expert in medication abortion describes how mifepristone and misoprostol work and what to expect after using these 'abortion pills.'

Jonathan Haidt, social psychologist and author of "The Anxious Generation," explains the dangers of exposing children and teens to smartphones and social media before a certain age and offers tips for parents on how to handle these challenges.

Read CNN's Fast Facts on mpox, formerly monkeypox, in the United States. The virus was declared a public health emergency of international concern by the World Health Organization. The virus originated in Africa and is the cousin of smallpox.

The Barkley Marathons consists of five loops of 20 miles each and has about 67,000 feet of elevation.

CNN's Victor Blackwell talks to Jazmin Evans who was kept off the transplant list for years.

This year, 28,000 pounds of human waste was removed from base camp. The Mount Everest Biogas Project plans to convert this waste into a usable product.

Sen. Mark Kelly joins The Lead

Mobility coach Dana Santas demonstrates the most important exercise in all of the programs she creates: the breathing bridge. It improves breathing, restores pelvic alignment, releases tension and boosts overall movement.

For some who see a therapist, just talking things through isn't enough. Drama therapy allows the patient to relive a moment or play out their biggest fears.

Since Tupperware, the iconic kitchen brand that's been a household name for decades, signaled recently that it might be going out of business, you might be wondering how long your stash of its food storage containers is safe to use — especially if it's vintage.

The first photo ever taken of a black hole looks a little sharper now.

It's a bird... It's a plane... It's a paper airplane!

We leave behind our fears of monsters under the bed as we say goodbye to our childhoods, but one can follow us into adulthood and loom over our heads.

Two 52 million-year-old bat skeletons discovered in an ancient lake bed in Wyoming are the oldest bat fossils ever found — and they reveal a new species.

The rate of premature birth in the United States is climbing, according to the infant and maternal health nonprofit March of Dimes.

The respiratory virus season has started early in kids this year and flooded children's hospitals in many parts of the country -- especially with respiratory syncytial virus, known as RSV.

Higher Covid-19 vaccination rates among US children could prevent thousands of pediatric hospitalizations and millions of missed school days, according to an analysis published Tuesday by the Commonwealth Fund and the Yale School of Public Health.

An experimental treatment, gantenerumab, failed to help people at high risk of memory loss from Alzheimer's or those who were in the early phases of the disease, the manufacturer said Monday.

Even before their daughter was born in June, Aaron and Helen Chavez knew she would need heart surgery. Doctors expected her to have an operation around 6 months of age.

The increasing popularity of stylish, trendy athletic wear has made über-comfortable clothing something that's not just for the gym. It's infiltrated all corners of culture, from high fashion runways to the offices of Silicon Valley executives — and really, it's appropriate for any occasion when you just want to be comfortable.