Derek Muller (Veritasium) asks Michio Kaku (Nov 4, 2015) about whether it is possible to do interstellar space travel and Michio Kaku explains different ways that we are deploying right now like booster rockets, nuclear rockets, antimatter rockets but all of these are very expensive and takes lots of time. But there is another way that humanity isn't taking seriously and that is connectome aka sending human consciousness into space on a laser beam and it can help us reach alpha centauri in just four years.
You can also buy a book on connectome - http://amzn.to/25EhDK6
For more information on connectome -
https://en.wikipedia.org/wiki/Connectome
http://www.humanconnectomeproject.org/
http://www.neuroscienceblueprint.nih.gov/connectome/
https://www.ted.com/talks/sebastian_seung?language=en
http://cbs.fas.harvard.edu/science/connectome-project
More about derek muller veritasium -
https://www.youtube.com/user/1veritasium
Other intersteller methods -
Antimatter Rockets - http://www.nasa.gov/exploration/home/antimatter_spaceship.html
http://www.space.com/27698-interstellar-nasa-real-science.html
http://www.huffingtonpost.com/entry/the-dismal-future-of-interstellar-travel_b_5965060.html
http://mkaku.org/home/articles/the-physics-of-interstellar-travel/
