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. How long would it take for the Earth to freeze if the Sun burnt... (more)
  12. Is the line spectrum that is produced by a fluorescent tube the... (more)
  13. What is the efficiency of a typical jet engine? i.e. how much of... (more)
  14. How many active volcanoes are there at any onetime on the Earth,... (more)
  15. In my science 9 class we recently had a discussion about... (more)
  16. Does a person get their blood from both parents or just one? My... (more)
  17. Why does an ice cube melt faster in tap water than salt water? (more)
  18. Does water affect a magnet's strength? Do magnets lose their... (more)
  19. What must occur for two parents with blood type AB to have a... (more)
  20. When seperating hydrogen and oxygen from water by using... (more)
  21. Why does lemon prevent the browning of apples? When browning of... (more)
  22. I have spent 4-5 hrs. attempting to magnetize some iron (Fe)... (more)
  23. How long can someone sustain without sleep? What factors would... (more)
  24. What is your personal view of global warming? Do you believe... (more)
  25. My son, age 12 is asking for a chemistry set for Christmas. This... (more)
  26. How much heat energy (watts) is released from the human body? Is... (more)
  27. Are we the center of the Universe? Does it always appear to an... (more)
  28. We have an older pop machine at work with canned soft drinks. ... (more)
  29. (more)

  30. Approximately how many nuclear tests do the americans alone... (more)
  31. How did scientists conclude that a major part of our genome is... (more)
  32. Since the Big Bang we see (with Hubert Reeves and other... (more)
  33. I have a small laser pointer. The spot produced by the beam is... (more)
  34. If matter expands when heated, and contracts when cooled, why... (more)
  35. Why can't an insect grow large enough to terrorize a city? (more)
  36. I am curious. What if two magnetic field lines were to intersect... (more)
  37. Why does phenolphthalein turn pink with a base? I know it has... (more)
  38. Why does a balloon travelling inside a car seem to violate... (more)
  39. Why does a digital camera need a shutter- I think it should be... (more)
  40. I have conducted an experiment with a parachute. I was... (more)
  41. Can you really grow plants from the seeds found in Mammoth... (more)
  42. What do paper and plastic bags degrade to? How much does it cost... (more)
  43. I heard... (more)

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

  72. If I knew the centre of the universe and began to travel toward... (more)
  73. I'm doing a science project in which I'm trying to see if sound... (more)
  74. How do astronomers know the true position of stars? When... (more)
  75. I understand the concept of dominant and recessive alleles but I... (more)
  76. If Pluto is not a planet, how is it classified? What is it... (more)

  77. Does temperature affect the performance of the mind? Such as... (more)
  78. Can you verify the scientific validity of statements I've... (more)

  79. How many scientists does Canada have? (more)
  80. What exactly is gravity? Is it a wave or a ray? What exactly... (more)

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