Twenty Fourteen – Word Break Issue

I’m using Twenty Fourteen Theme and it’s breaking my words off at the paragraph end instead of wrapping the word.
For example, it add a –
then finished the word on the next line.
You can see this on
https://www.thisworldisflat.com/top-15-travel-resources/

I’ve tried changing to word-wrap: normal; in CSS but it hasn’t changed anything.

Is there a plug-in or bit of code I can add, and where would I add it?

Thank you!