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  1. Why do brown or blue eyes turn green in young adulthood? (more)
  2. Are Sedna and Quaoar two new planets? (more)
  3. Is it true that in total a bee's venom is acidic while a wasp's... (more)
  4. In the book Cat's Cradle by Kurt Vonnegut, Jr., there is a... (more)
  5. Which substance plays the most important role in making a blue... (more)
  6. What is the amount of force in foot pounds behind the average... (more)
  7. How many satellites orbit the earth? How many are used for... (more)
  8. I would really appreciate it if someone could help me make sense... (more)
  9. How much liquid is in the stomach? (more)
  10. Is water from a dehumidifier de-ionized? The owner's manual for... (more)
  11. Is the line spectrum that is produced by a fluorescent tube the... (more)
  12. How many active volcanoes are there at any onetime on the Earth,... (more)
  13. How long would it take for the Earth to freeze if the Sun burnt... (more)
  14. What is the efficiency of a typical jet engine? i.e. how much of... (more)
  15. In my science 9 class we recently had a discussion about... (more)
  16. Does water affect a magnet's strength? Do magnets lose their... (more)
  17. Why does an ice cube melt faster in tap water than salt water? (more)
  18. Does a person get their blood from both parents or just one? My... (more)
  19. When seperating hydrogen and oxygen from water by using... (more)
  20. Why does lemon prevent the browning of apples? When browning of... (more)
  21. I have spent 4-5 hrs. attempting to magnetize some iron (Fe)... (more)
  22. How much heat energy (watts) is released from the human body? Is... (more)
  23. My son, age 12 is asking for a chemistry set for Christmas. This... (more)
  24. What is your personal view of global warming? Do you believe... (more)
  25. What must occur for two parents with blood type AB to have a... (more)
  26. (more)

  27. We have an older pop machine at work with canned soft drinks. ... (more)
  28. Approximately how many nuclear tests do the americans alone... (more)
  29. How did scientists conclude that a major part of our genome is... (more)
  30. Since the Big Bang we see (with Hubert Reeves and other... (more)
  31. Are we the center of the Universe? Does it always appear to an... (more)
  32. I have a small laser pointer. The spot produced by the beam is... (more)
  33. I am curious. What if two magnetic field lines were to intersect... (more)
  34. Why does phenolphthalein turn pink with a base? I know it has... (more)
  35. Why can't an insect grow large enough to terrorize a city? (more)
  36. Why does a balloon travelling inside a car seem to violate... (more)
  37. Why does a digital camera need a shutter- I think it should be... (more)
  38. How long can someone sustain without sleep? What factors would... (more)
  39. If matter expands when heated, and contracts when cooled, why... (more)
  40. Can you really grow plants from the seeds found in Mammoth... (more)
  41. I have conducted an experiment with a parachute. I was... (more)
  42. What do paper and plastic bags degrade to? How much does it cost... (more)
  43. What are the urgent steps an undergrad must take to start... (more)
  44. I heard... (more)

  45. What is "time"? Does the word "time" in Physics have the same... (more)
  46. I would like to know the amount of salt (either in ppm or %) in... (more)
  47. I hear there are 9 species of cicadas in Canada, but I haven't... (more)
  48. Are double yolked eggs ever viable? Can they be fertilized? If... (more)
  49. If you find a bone in an archeological dig how can u tell what... (more)
  50. What causes a titanium headed golf club to spark when striking a... (more)
  51. What is inside an atom? In between the electrons and the... (more)
  52. When does your skull reach its full, adult size? (more)
  53. What are water's special qualities, and how do they work? (more)
  54. In my youth, I heard a story about an experiment: you compress a... (more)
  55. What is sugar? (more)
  56. I was wondering where I can find good resources on determining... (more)
  57. Why does vitamin C not work as well if it has been heated? I... (more)
  58. Is homosexuality inborn? (more)
  59. If the sun is a heat source, and as the sun gets closer to the... (more)
  60. How can I construct a simple laser beam? (more)
  61. My question: How will they produce plastics, tires, roads or... (more)
  62. Why does it take nerves so long to grow back, more than for skin... (more)
  63. What happens when you use ethanol (unblended) in a standard,... (more)
  64. We were learning about colour and light when my teacher Mlle.... (more)
  65. I am a year 5 teacher. I was wondering if it would be ok if I... (more)
  66. What process does a jellyfish go through when it stings... (more)
  67. I do not know if this might relate to Global Warming, but I... (more)
  68. Does a magnetic and/or electric field have an affect on... (more)
  69. If I knew the centre of the universe and began to travel toward... (more)
  70. If splitting the atom can create a huge amount of energy, then... (more)
  71. What is the significance of Science in our society? (more)
  72. I understand that cancer is caused by mutations in some of... (more)

  73. How do astronomers know the true position of stars? When... (more)
  74. If Pluto is not a planet, how is it classified? What is it... (more)

  75. I understand the concept of dominant and recessive alleles but I... (more)
  76. I'm doing a science project in which I'm trying to see if sound... (more)
  77. How many scientists does Canada have? (more)
  78. Can you verify the scientific validity of statements I've... (more)

  79. What are some recent Canadian contributions to research and... (more)
  80. What exactly is gravity? Is it a wave or a ray? What exactly... (more)

  81. Ethanol is the focus of many tax dollars these days. It seems to... (more)
  82. Why is it that a difference in the number of electrons in an... (more)
  83. What are the surfaces of Uranus and Neptune like? Is there wind... (more)
  84. How long would it take for the next Ice Age to develop? (more)
  85. Hi, I was just wondering, I wanted to get into the whole... (more)
  86. This question relates to global warming. Recent science news... (more)
  87. How are sand dollars bleached white? Is it by the sun or the sea? (more)
  88. The name for gas written on CNG filling station is octane. There... (more)
  89. Is there a difference between total recall and a photographic... (more)
  90. I imagine there must be a gene for lactose tolerance in mammals... (more)
  91. Why does salt melt ice? (more)
  92. Is it true that the moon moves away from the earth a few... (more)
  93. What will happen if we use petrol in a diesel engine or vice... (more)
  94. How much energy in joules will be produced from an exploding... (more)
  95. Can you tell me about enhancing mental performance and cognitive... (more)
  96. There has been much mention of antimatter, such as... (more)
  97. When a nuclear particle radiates either an Alpha, Beta or Gamma... (more)
  98. Is it possible for the air that we breathe to either run out or... (more)
  99. I was just wondering what the ratio is between male and female... (more)
  100. What are the components of a fever strip and the chemical... (more)