1. Family, demography, overpopulation
3. Marriage, love, partnership
2. Relationships, sex, LGBT
3. Personality, emotions, feelings, temperaments
3. Homo sapiens, body systems
7. Studying, ways of learning
8. Education, studying abroad
9. Work, jobs, working place, colleagues, bosses
11. Public speaking, strategies
12. Outstanding people, idols
14. Psychology and psychological disorders
16. Happiness, hormones
17. Psychology ways of improving life, disorders
18. Psychiatry, lobotomy
19. Style, fashion, trends
20. Culture of different counties
21. Geography, famous explorer
22. Biology, species, beauty of the planet
23. Nobel price winners
24. Industry and manufacturing
25. Physics, electricity, theory of relativity
26. Chemistry, organic, inorganic
27. Architecture, ancient buildings
28. Informatic, programming, social nets, apps
29. Genetic engineering
30. Crime, court and justice
31. Philosophy, philosophers, branches
32. Physiology, body systems
33. Politics, internal, international
34. Economics, types, problems
35. Industry, manufacturing, industrial revolution
36. Ornithology, birds, species
37. Medicine, dentistry
38. Ecology, environment
39. Arts, genres, painters
40. Law, human rights, humanity
41. History of English, Old English
42. Ichthyology, fish, sea animals
43. Mathematics, algebra, geometry
44. Medicine, pharmaceuticals
45. Sociology, world society
46. War, conflicts, army
47. Weather forecast
48. Diplomacy, negotiations
49. Religion, belief, cults
50. Final test
