2 - Windows mostly obsolete - no
3 - Polarized glass in windows - kind of - mostly no, though some exist
4 - Opacity of glass changing based on light intensity - yes, but rare
5 - Underground housing - yes, but rare
6 - "Light-forced vegetable gardens" - yes, but rare
7 - Surface of the Earth used only for large-scale agriculture, grazing and parklands - no
8 - Kitchen gadgets - yes
9 - Robots with computers minituarized to serve as their "brains" - yes
10 - Trash picking and gardening robots - yes
11 - 3D movies - yes
12 - Waiting in line for movies - yes
13 - All appliances lack electrical cords - no
14 - Appliances "powered by long-lived batteries running on radioisotopes" - no
15 - Fission power supplies "well over half of the power needs of humanity" - no
16 - Experimental fusion power plant - no? (experiments with fusion power yes, but no power plants, afaik)
17 - Large solar-power stations - yes
18 - Power stations in space - no
19 - Road building factories - no
20 - "crowded highways along which long buses move on special central lanes" - no
21 - "ground travel will increasingly take to the air a foot or two off the ground" - no
22 - Aquafoil - kind of - these exist but are of very limited use
23 - Jets of compressed air lifting land vehicles off the highways - no
24 - Self-driving cars - yes
25 - Moving sidewalks downtown - no
26 - "Compressed air tubes will carry goods and materials" - no
27 - Video calls - yes
28 - Screens for studying documents and photographs and reading passages from books - yes
29 - Global satelite communication - yes
30 - Moon colonies - no
31 - GM creating "large soft tires intended to negotaiate the uneven terrain that may exist [on the moon]" - no
32 - Communication between Earth and moon via laser beams - no
33 - Plans for a manned expedition to Mars - yes
34 - Models of an elaborate Martian colony - kind of
35 - "Wall screens will have replaced the ordinary [TV set]" - no
36 - Transparent cubes for 3D viewing - no (though VR might qualify as being similar enough)
37 - World and US population predictions - yes
38 - Underwater housing - no
39 - Underwater cities - no
40 - Micro-organism factories for efficient food production - no
41 - Food made of yeast and algae - kind of (algae yes, though not popular... yeast, not so much)
42 - "algae bar", "mock-turkey", "pseudosteak" - yes
43 - Mechanical replacements for hearts and kidneys - yes
44 - Life expectancy in some parts of the world at 85 - yes
45 - Worldwide propaganda drive in favor of birth control - yes
46 - Rate of population growth has been reduced compared to 1964 - yes
47 - World Population Control Center - no
48 - Mankind has become "largely a race of machine tenders" - no
49 - Schools with closed-circuit TVs and programmed instructional tapes - yes
50 - All high-school students taught computer fundamentals - yes
51 - Mankind suffers badly from "the disease of boredom" - kind of, for some
52 - Psychiatry is "far and away the most important medical specialty" - no
53 - We live in a society of "enforced leisure" - no
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Totals:
Yes - 22
No - 26
Kind of - 5