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  1. Distillation, 16th century woodcut
  2. Molecule Chili
  3. Arthritis of the hip, X-ray
  4. Molecule Ethanol
  5. Telephone switchboard operator, 1914
  6. Agate Geode I
  7. Close Ups Of Fortification On Crazy Lace Agate
  8. Artwork of a plesiosaur dinosaur hunting
  9. Base of human skull, inferior view, with labels
  10. Normal hip, X-ray
  11. Human heart, artwork
  12. Legend of Archimedes and the lever
  13. T-Rex Fighting A Group Of Triceratops
  14. The vertebral column
  15. Conceptual image of DNA
  16. Woolly mammoths
  17. 19th Century electrical equipment
  18. The Apothecary or, The Chemist
  19. Wind turbine in rural location with old barn in Cavalier County, USA
  20. Artwork of a Tyrannosaurus rex dinosaur
  21. Energy
  22. Tyrannosaurus
  23. Earth Agate A
  24. Edwin Hubble, US astronomer
  25. Bronchodilator drug crystals, SEM
  26. Human skeleton
  27. Normal knee, X-ray
  28. Animal Cell, Illustration
  29. Rosalind Franklin, British chemist
  30. DNA nucleotides, artwork
  31. The Summer Road
  32. H1N1 flu virus particle, artwork
  33. Lungs in situ - anterior view. respiratory system
  34. Tennessee - USGS State Mosaic
  35. Granville Woods, US inventor
  36. Evolution of man
  37. Human digestive system, with labels
  38. Conybeare Plesiosaurus reconstruction
  39. Portrait of Michael Faraday (1791-1867) 1841-42
  40. Garden Tulip - Botanical Illustration
  41. Michigan - USGS State Mosaic
  42. Star trails and bioluminescence, Gippsland Lakes, Australia
  43. Conceptual image of platelets with red blood cells
  44. Electric Streetlight, 1881
  45. Burst of energy forms into powerful beam of light
  46. Medieval urine wheel
  47. Blood cells in blood vessel, artwork
  48. Mitosis