Interesting.
Some initial comments:
Patronage could be strengthened, perhaps +1 culture per specialist.
Geology: name change from Alchemy presumably lets you put Alchemy into the tree earlier (at some later date.) Maybe +1 hammer per quarry
Welfare: Maybe rename Social Welfare. Need something for this to do or enable.
Public parks, public hospitals, public libraries, etc. might go here, but do not really see how these fits into the current game. Perhaps some sort of new National Wonder or Project would work. National project such as Social Security might give +1 health and +1 happiness in every city.
Film: maybe rename moving pictures, cinema, or movies.
Pharmaceuticals: Need something for this to do or enable. Perhaps +1 health in all cities or +1 health per hospital, or allows building of drugstores.
Contraception: Really does not go with emancipation. May be better to have a separate tech named emancipation. For contraception maybe +1 hammer and/or +1 coin and/or +1 specialist per city while somehow slowing the growth of cities.
Total War: Need something for this to do or enable. Perhaps allows National Monument or gives a small boost to military production or gives +1 experience to military units being built or gives a small bonus versus war weariness.
Nutrition: Need something for this to do or enable. Perhaps +1 health in all cities or +1 health to supermarket.
Genetics: Need something for this to do or enable. Perhaps genetic modified crops give +1 food to farms, winery, and plantations. However, the green revolution boosting the yields from rice, wheat, etc. really predated modern genetic engineering.
Certainly possible to have both Genetics and then Genetic Engineering as separate techs.
Biofuels: Need something for this to do or enable. Maybe reduces the unhealthiness from fossil fuels.
Some of us play without the space race victory. (I got tired of it many years ago, probably during CIV 2.) In the future, it would be good if you could find useful things for the last techs to do in addition to helping build the spaceship.
Here's a somewhat unfinished preview of the techtree for 0.9.2. Still some sorting and a lot of testing to be done. Green techs are new, yellow techs are moved/renamed. The late modern era is a bit more compressed than I ultimately intend but I'll address that in a later version. Let me know what you think.
(I zipped the diagram as it's too wide to display legibly on this site)