This week on Humankind, a little girl was in fits of laughter thanks to an unlikely best friend, firefighters plucked a stranded kitten from disaster, there was a suspenseful rescue of a man who'd ...

Learning letters has never looked so fun! Baby Winston's infectious laugh as his dad teaches him how to say "W" is sure to make you giggle. The video above shows Winston learning the alphabet with his ...

Melanin Bee curves her spine like a stretching cat as she lets out a maniacal, forced laugh. The quick-fire pattern of manufactured giggles —“oh, hoo hoo hoo, eeh, ha ha ha”— soon ripples into genuine ...

This week's Best Of features an infectious toddler laugh, a helicopter rescue, a soldier's homecoming surprise and more!