Only those of us who have experienced the terror of threatened captivity may truly appreciate the heroes that three Cleveland women became as they seized the chance of escape.

As a 9-year-old, Lesia Cartelli was severely burned in an accident. Today, she runs a healing retreat for girls with burn injuries like hers.

Evan and Eric Edwards have life-threatening allergies and wanted to develop a better way to deliver epinephrine. Their vision started when the brothers were high school seniors and became a reality soon afterward.

Dr. Marguerite McDonald has a clear vision for helping people see better.

Neuroscientists love Aplysia. They are a type of sea slug that grows to be about a foot long. With only 20,000 nerve cells -- compared with about 100 billion found in the human brain -- Aplysia are the perfect lab animals for brain researchers hoping to isolate a crucial connection.

These virtual unknowns made major discoveries in the medical field that benefit millions of us every day. Learn more about these pioneers and their accomplishments.

After his gastric bypass surgery, Dale Benzine's life changed drastically. It wasn't easy, he says, but it was definitely worth it.

Being outside of her comfort zone has helped Rae Timme conquer her fears and self-doubt as she trains for her first triathlon.

Less cancer treatment may be better, and being in good physical shape may help keep cancer away, according to the latest research being presented at the largest convergence of cancer experts worldwide.

Zach Sobiech, 18, passed away on Monday, surrounded by loved ones. His song, "Clouds," has more than 3 million views on YouTube.