To Say Nothing of the Dog (Oxford Time Travel, #2)
by Connie Willis
Reread in March 2015 and bumped up by a star. A delightful and supremely enjoyable cross between early 20th century mystery novels, a comedy of manners, and science fiction with time travel shenanigans. At the end, most of the characters propose to one another and then everyone gets a kitten. Only Connie Willis could make this shit up and then make you love every minute of it. <3
I don't think we're on track for time travel by the 2070s, since we failed to have a Pandemic in 2013. Ebola II, though....