1. Eagle pub, Cambridge, 1 n. 6
2. Earth, 1;
   1. age, 1;
   2. atmosphere, 1, 2, 3, 4, 5, 6 n. 13, 7 n. 1;
   3. biosphere, 1;
   4. core, 1;
   5. crust, 1, 2;
   6. equator, 1, 2, 3, 4, 5, 6, 7 nn. 5, 8; 8 nn. 10, 11;
   7. equatorial regions, 1, 2 n. 7, 3 n. 5;
   8. formation, 1 n. 5;
   9. gravity, 1, 2, 3;
   10. habitability, 1, 2;
   11. heat, 1, 2, 3, 4, 5, 6, 7, 8 nn. 5, 8; 9, n. 16, 10 n. 1;
   12. interior, 1;
   13. magnetic field, 1, 2;
   14. magnetic poles, 1;
   15. mantle, 1;
   16. northern/southern hemipheres, 1, 2, 3, 4, 5, 6 n. 11, 7 n. 16;
   17. orbit, 1, 2, 3, 4, 5, 6, 7, 8 n. 8, 9 n. 23;
   18. polar band, 1, 2 n. 12;
   19. polar regions, 1, 2 n. 5;
   20. poles, 1, 2, 3, 4, 5 n. 8, 6 nn. 10, 11, 12; 7 n. 17;
   21. rotation, 1, 2 n. 9, 3 nn. 10, 12;
   22. seasons, 1, 2 nn. 16, 17;
   23. size, 1;
   24. solstices, 1;
   25. spin axis, 1, 2, 3, 4 n. 8, 5 n. 17;
   26. strata, 1;
   27. stratosphere, 1;
   28. subsolar point, 1;
   29. temperature, 1, 2, 3, 4, 5, 6, 7 n. 16, 8 n. 10;
   30. tropical band, 1, 2 n. 12;
   31. troposphere, 1, 2, 3;
   32. see also air, climate, continental crust, continental drift, Milanković cycles, oceanic crust, Snowball Earths, tectonic plates, weather systems
3. earthquakes, 1, 2, 3
4. ecology, 1
5. economics, 1, 2, 3, 4, 5 n. 2;
   1. see also econophysics, inflation, protectionism, stagnation, subsidy, trade
6. econophysics, 1
7. eddies, see vortices
8. Eddington, Arthur, 1, 2, 3
9. Edison, Thomas, 1, 2, 3 n. 8
10. efficiency, see energy
11. egg(s), see ovum/ova
12. Einstein, Albert, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 n. 11, 22 n. 12, 23 n. 20, 24 n. 5, 25 n. 6 infra, 26 n. 8, 27 n. 9, 28 n. 11, 29 n. 13
13. electric current, 1, 2, 3, 4, 5 n. 5;
    1. voltage, 1, 2, 3, 4 n. 18;
    2. see also AC, DC
14. electric field, 1, 2, 3, 4, 5, 6 nn. 15, 17; 7 n. 20, 8 n. 5
15. electric force, 1, 2, 3, 4 n. 2, 5 n. 11
16. electric generator, 1, 2
17. electric motor, 1, 2
18. electricity, 1, 2, 3 n. 5, 4 n. 10;
    1. charge imbalance, 1, 2 nn. 7, 9; 3 n. 13;
    2. domestic supply, 1, 2, 3, 4 n. 17;
    3. insulation, 1, 2 n. 17, 3 n. 17;
    4. long-distance transmission, 1;
    5. within cells, 1, 2 n. 17;
    6. see also conductors, domestic appliances, National Grid, power stations, semiconductors, wire coil
19. electrodynamics, 1
20. electromagnetic fields, 1
21. electromagnetic force, 1, 2, 3
22. electromagnetic spectrum, 1 n. 11
23. electromagnetic waves, 1, 2
24. electromagnetism, 1, 2, 3 n. 4;
    1. Maxwell’s theory of, 1
25. electron degeneracy pressure, 1 n. 15
26. electron-neutrinos, see neutrinos
27. electron waves, 1, 2, 3, 4 n. 3, 5 n. 15, 6 n. 19, 7 n. 11
28. electrons, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 nn. 1, 3, 4; 16 nn. 6, 7; 17 n. 2, 18 nn. 3, 4; 19 n. 5, 20 n. 9, 21 nn. 15, 17; 22 n. 5, 23 n. 10, 24 n. 8, 25 n. 14;
    1. combination, 1, 2, 3 n. 2;
    2. indistinguishability, 1, 2 n. 19, 3 n. 11;
    3. orbit, 1, 2, 3, 4;
    4. positively/negatively charged, 1, 2, 3, 4, 5, 6 n. 5, 7 n. 10, 8 n. 13;
    5. and quantum theory, 1, 2, 3, 4, 5 n. 8, 6 n. 15;
    6. shell arrangement, 1, 2, 3 n. 3;
    7. spin, 1, 2, 3, 4 nn. 9, 10, 5 n. 19, 6 n. 11
29. electroweak force, 1
30. elements, 1
31. Eliot, T. S., 1
32. ellipse, 1 n. 10
33. embryo development, 1, 2, 3, 4, 5, 6 n. 7
34. emergence, 1, 2
35. employment, 1
36. endoplastic reticulum, 1
37. energy, 1, 2, 3, 4, 5, 6 n. 8;
    1. chemical, 1, 2, 3;
    2. density, 1, 2 n. 11, 3 n. 13;
    3. dissipation, 1 n. 17;
    4. efficiency, 1, 2, 3 n. 7;
    5. electrical, 1, 2, 3, 4, 5;
    6. explosive, 1, 2 n. 4;
    7. generation, 1, 2, 3, 4, 5;
    8. geochemical, 1 n. 11;
    9. gravitational, 1, 2, 3, 4;
    10. heat, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 n. 19, 11 n. 3, 12 n. 7;
    11. law of conservation of, 1, 2, 3, 4, 5, 6 n. 4, 7 n. 6, 8 n. 10;
    12. liberation of, 1, 2, 3;
    13. light, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 n. 11;
    14. loss, 1;
    15. lowest, 1 n. 3;
    16. magnetic, 1 n. 19;
    17. and mass, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 n. 5;
    18. minimisation, 1, 2;
    19. of motion, 1, 2, 3, 4, 5 n. 1, 6 n. 14, 7 n. 6;
    20. nuclear, 1;
    21. orbital, 1;
    22. per person, 1;
    23. requirement, 1;
    24. solar, 1, 2, 3 n. 11, 4 n. 1;
    25. sound, 1, 2, 3;
    26. source, chemical, 1;
    27. surplus, 1, 2, 3 n. 6;
    28. transformation, 1;
    29. ultra-high, 1;
    30. and work, 1, 2, 3 n. 1;
    31. see also dark energy, sunlight
38. ‘Enigma’ code, 1
39. entropy, 1, 2, 3 n. 8, 4 nn. 12, 14; 5 n. 9
40. epigenetics, 1
41. ‘epoch of last scattering’, see ‘last scattering, epoch of ’
42. ESA (European Space Agency), 1
43. eukaryotes, 1, 2, 3, 4 n. 5; 5 n. 10;
    1. cytoskeleton, 1
44. eukaryotic cells, 1, 2, 3 n. 6;
    1. fusion, 1
45. Euphrates river, 1
46. Europe, 1, 2, 3, 4, 5, 6
47. evaporation, 1
48. event horizon, 1, 2, 3
49. Everest, Mount, 1 n. 12
50. evolution, 1, 2, 3, 4, 5, 6, 7, 8;
    1. see also artificial selection, natural selection
51. evolution, human, 1
52. exchange particle, 1
53. exchange rate, 1, 2
54. extinction, 1, 2, 3, 4, 5, 6, 7, 8
55. Everything, Theory of, 1, 2
56. eye, 1, 2, 3, 4;
    1. retina, 1
57. eye colour, see genes