78-year-old breaks record, becomes oldest woman to summit Mt. Rainier

Imagine climbing 9,000 feet across glaciers and crevasses in unstable weather to summit your state's tallest mountain. Now picture doing it at 78 years old.

Florida firefighter adopts baby left in safe haven box

The firefighter, who heard the alarm and discovered the baby inside, said he fell in love with the infant as soon as their eyes met.

Watch: Young dancing siblings go viral

Andie and Melanie's proud mom began sharing their videos on social media, and it didn't take long for them to become internet sensations.

Chimp who spent entire life inside indoor lab 'in awe' after seeing open sky for the first time

Save the Chimps, a privately funded sanctuary in Fort Pierce, on Florida’s east coast, released video showing Vanilla “awestruck as she beholds the open sky for the first time at her new island home," the group said.

Firefighters rescue dog that jumped 34 feet from tower at Connecticut state park

Dozens of firefighters helped rescue a dog that jumped 34 feet from a tower at Mount Tom State Park in Connecticut and was unable to walk out of the woods with his owner.

Tearjerking video: Utah couple reunites with lost dog after days-long search

“Yesterday was the best day of our lives," owner Cienna Macfarlane shared. “After four excruciatingly painful days, we got our baby boy back!

Watch: Chimp 'infatuated' with newborn at zoo builds nest for 'pretend baby'

"Zola has always had a very maternal side and we have often caught her playing with rocks and building nests for her stones, even picking them up and carrying in her leg pocket."

Watch: 'Legendary' math professor, 88, gets standing ovation after final lecture

Gilbert Strang, 88, was one of the first professors to post his lectures to OpenCourseWare, which gave millions of people free access to MIT classes.

Homeless woman who gave bike to 3-year-old boy after his was stolen, gifted $11K in donations

Darlene Plasse-Young wanted nothing in return for her generosity, but the Rockland Police Department in Maine decided to partner with a local non-profit to ensure her selfless act didn’t go unnoticed.