A new trending hashtag, #chasethechill, has people all over leaving scarves and warm articles of clothing around cities and streets for people to give up.
Many have a note offering the scarf to anyone who wants or needs it, and encourages the person who picked it up to try and do a good deed if they could for someone else.
Trends like this are very hopeful, and show that if we are given the right context, we are very social, empathic creatures willing to help each other out.