1. Why do brown or blue eyes turn green in young adulthood? (more)
  2. Are Sedna and Quaoar two new planets? (more)
  3. In the book Cat's Cradle by Kurt Vonnegut, Jr., there is a... (more)
  4. Is it true that in total a bee's venom is acidic while a wasp's... (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 the line spectrum that is produced by a fluorescent tube the... (more)
  11. How many active volcanoes are there at any onetime on the Earth,... (more)
  12. Is water from a dehumidifier de-ionized? The owner's manual for... (more)
  13. How long would it take for the Earth to freeze if the Sun burnt... (more)
  14. In my science 9 class we recently had a discussion about... (more)
  15. Why does an ice cube melt faster in tap water than salt water? (more)
  16. Why does lemon prevent the browning of apples? When browning of... (more)
  17. When seperating hydrogen and oxygen from water by using... (more)
  18. I have spent 4-5 hrs. attempting to magnetize some iron (Fe)... (more)
  19. What is the efficiency of a typical jet engine? i.e. how much of... (more)
  20. Does water affect a magnet's strength? Do magnets lose their... (more)
  21. How much heat energy (watts) is released from the human body? Is... (more)
  22. (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. We have an older pop machine at work with canned soft drinks. ... (more)
  26. Approximately how many nuclear tests do the americans alone... (more)
  27. I am curious. What if two magnetic field lines were to intersect... (more)
  28. I have a small laser pointer. The spot produced by the beam is... (more)
  29. Why does phenolphthalein turn pink with a base? I know it has... (more)
  30. Are we the center of the Universe? Does it always appear to an... (more)
  31. Since the Big Bang we see (with Hubert Reeves and other... (more)
  32. Why does a digital camera need a shutter- I think it should be... (more)
  33. Why can't an insect grow large enough to terrorize a city? (more)
  34. What must occur for two parents with blood type AB to have a... (more)
  35. How did scientists conclude that a major part of our genome is... (more)
  36. What do paper and plastic bags degrade to? How much does it cost... (more)
  37. Why does a balloon travelling inside a car seem to violate... (more)
  38. I heard... (more)

  39. What is "time"? Does the word "time" in Physics have the same... (more)
  40. How long can someone sustain without sleep? What factors would... (more)
  41. I have conducted an experiment with a parachute. I was... (more)
  42. Can you really grow plants from the seeds found in Mammoth... (more)
  43. I would like to know the amount of salt (either in ppm or %) in... (more)
  44. I hear there are 9 species of cicadas in Canada, but I haven't... (more)
  45. What are the urgent steps an undergrad must take to start... (more)
  46. What causes a titanium headed golf club to spark when striking a... (more)
  47. If you find a bone in an archeological dig how can u tell what... (more)
  48. Are double yolked eggs ever viable? Can they be fertilized? If... (more)
  49. If matter expands when heated, and contracts when cooled, why... (more)
  50. I was wondering where I can find good resources on determining... (more)
  51. What are water's special qualities, and how do they work? (more)
  52. What is inside an atom? In between the electrons and the... (more)
  53. What is sugar? (more)
  54. When does your skull reach its full, adult size? (more)
  55. In my youth, I heard a story about an experiment: you compress a... (more)
  56. I am a year 5 teacher. I was wondering if it would be ok if I... (more)
  57. My question: How will they produce plastics, tires, roads or... (more)
  58. If I knew the centre of the universe and began to travel toward... (more)
  59. I do not know if this might relate to Global Warming, but I... (more)
  60. Why does vitamin C not work as well if it has been heated? I... (more)
  61. How can I construct a simple laser beam? (more)
  62. If splitting the atom can create a huge amount of energy, then... (more)
  63. Does a magnetic and/or electric field have an affect on... (more)
  64. If the sun is a heat source, and as the sun gets closer to the... (more)
  65. Why does it take nerves so long to grow back, more than for skin... (more)
  66. Is homosexuality inborn? (more)
  67. If Pluto is not a planet, how is it classified? What is it... (more)

  68. What happens when you use ethanol (unblended) in a standard,... (more)
  69. What is the significance of Science in our society? (more)
  70. I understand the concept of dominant and recessive alleles but I... (more)
  71. I understand that cancer is caused by mutations in some of... (more)

  72. How do astronomers know the true position of stars? When... (more)
  73. I'm doing a science project in which I'm trying to see if sound... (more)
  74. Ethanol is the focus of many tax dollars these days. It seems to... (more)
  75. What are some recent Canadian contributions to research and... (more)
  76. Can you verify the scientific validity of statements I've... (more)

  77. How many scientists does Canada have? (more)
  78. Hi, I was just wondering, I wanted to get into the whole... (more)
  79. How long would it take for the next Ice Age to develop? (more)
  80. Why is it that a difference in the number of electrons in an... (more)
  81. This question relates to global warming. Recent science news... (more)
  82. What exactly is gravity? Is it a wave or a ray? What exactly... (more)

  83. We were learning about colour and light when my teacher Mlle.... (more)
  84. How are sand dollars bleached white? Is it by the sun or the sea? (more)
  85. I imagine there must be a gene for lactose tolerance in mammals... (more)
  86. The name for gas written on CNG filling station is octane. There... (more)
  87. What are the surfaces of Uranus and Neptune like? Is there wind... (more)
  88. Is it true that the moon moves away from the earth a few... (more)
  89. What will happen if we use petrol in a diesel engine or vice... (more)
  90. I was just wondering what the ratio is between male and female... (more)
  91. There has been much mention of antimatter, such as... (more)
  92. Why does salt melt ice? (more)
  93. How much energy in joules will be produced from an exploding... (more)
  94. Is it possible for the air that we breathe to either run out or... (more)
  95. Can you tell me about enhancing mental performance and cognitive... (more)
  96. What are the components of a fever strip and the chemical... (more)
  97. How is the spin imparted to a golf ball during the collision... (more)
  98. When a nuclear particle radiates either an Alpha, Beta or Gamma... (more)
  99. Why is it that when calculating the volume of a pyramid, such as... (more)
  100. I have seen in a TV show that by a very high magnetic force... (more)