1.  Colin Stuart giving a TED talk in this video elaborates on Einstein’s work thinking it is a yes

Here is an intro to his video:

Time travel is a staple of science fiction stories, but is it actually possible? It turns out nature does allow a way of bending time, an exciting possibility suggested by Albert Einstein when he discovered special relativity over one hundred years ago. Colin Stuart imagines where (or, when) this fascinating phenomenon, time dilation, may one day take us.

We hope you enjoy it and feel free to comment with your ideas!