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  1. Carbon nanotube
  2. Joint pain, conceptual artwork
  3. Canada, Mackenzie Mountains, Ravensthroat River. Aurora Borialis
  4. Coloured SEM of human embryo at 16-cell stage
  5. Blood pressure gauge
  6. Stethoscope
  7. Viral throat infection, artwork
  8. NASA, Houston, Texas
  9. Siberian Ribbons - USGS Earth as Art
  10. Male muscles, artwork
  11. Human head anatomy, artwork
  12. Manual worker working in a foundry
  13. Patent--Sewing Machine
  14. Mushroom Chart II
  15. Blood samples
  16. Canada balsam
  17. Protein tyrosine phosphatase molecule
  18. Dragon Lake - USGS Earth as Art
  19. Insulin receptor, molecular model
  20. Welders Goggles I
  21. Gaulard transformer, 19th century
  22. Rocky Mountains - USGS Earth as Art
  23. Zasite Stone With Rudby
  24. x-ray of head
  25. Chromaticity diagram
  26. Refraction of light by lenses
  27. Antique microscope
  28. View Of Saturn From The Surface Of Mars, A Composite Image
  29. 2s electron orbital
  30. Bacteria infecting a macrophage, SEM
  31. Halophiles Phenomena, Dead Sea - Aerial Photograph
  32. Durer's world map, 1515
  33. Skin pigmentation in Addison's disease
  34. Human evolution, artwork
  35. The docking of SpaceX Dragon to the International Space Station above Earth
  36. DNA molecule
  37. Stem cell research
  38. Anatomy of nasal sinuses
  39. Heart anatomy, 19th Century illustration
  40. Circulatory system, 17th century
  41. Puerto Rico - USGS State Mosaic
  42. Man using laptop computer
  43. View Of Venus And Moon From The Surface Of Mars, A Composite Image
  44. Global temperatures, April 2003
  45. Galileo using a telescope
  46. Satellite view of city lights in several European and Nordic cities
  47. Prehistoric tree ferns, artwork
  48. Tuberculosis Transfusion, 19th Century