In a heartwarming tale that will restore your faith in humanity (or at least in the younger generation's ability to put down their phones for five minutes), a mother of two recounts the moment her world stopped - and five teenagers came running.

The woman was at the park with her sons, aged five and seven, riding a modified scooter designed so her eldest, who has cerebral palsy, could join in the fun. Because when you have boys, as she notes, "you need to run them like dogs." Unfortunately, a puddle and a slippery bend sent them crashing sideways. When she looked at her son, he was unconscious. Cue sheer terror.

But then, like a scene from a very wholesome action movie, five teenagers materialized. One called an ambulance, another went looking for her younger son, and one girl simply wrapped an arm around her - a small gesture that the mother still remembers vividly. The teenagers, it turns out, are not just NPCs in a coming-of-age Netflix series; they are, in fact, capable of kindness.

Read more in the "Kindness of Strangers" series, where we celebrate the fact that not everyone is a total jerk.