That clip was produced using real data that scientists collected a few years ago from a blue whale in Monterey Bay, California. The heart beat slowly when the animal dived, but when it came to the ...

When your heart “skips a beat” it may feel like a brief flutter or flip-flop in your chest. A scary symptom that is usually ...

“He was always very blue, he was always ... been waiting for — they had a heart for Luka. The donor, a 9-year-old boy from Kansas, gave Luka a chance to beat the odds.

If your heart’s ever skipped a beat, you’ve had what are called heart palpitations. It might feel like your heart is throbbing, pounding, or fluttering. Or you simply might not feel well.