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. Is water from a dehumidifier de-ionized? The owner's manual for... (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. Why does an ice cube melt faster in tap water than salt water? (more)
  17. When seperating hydrogen and oxygen from water by using... (more)
  18. Does water affect a magnet's strength? Do magnets lose their... (more)
  19. Why does lemon prevent the browning of apples? When browning of... (more)
  20. I have spent 4-5 hrs. attempting to magnetize some iron (Fe)... (more)
  21. How much heat energy (watts) is released from the human body? Is... (more)
  22. My son, age 12 is asking for a chemistry set for Christmas. This... (more)
  23. (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. How did scientists conclude that a major part of our genome is... (more)
  28. I have a small laser pointer. The spot produced by the beam is... (more)
  29. Are we the center of the Universe? Does it always appear to an... (more)
  30. I am curious. What if two magnetic field lines were to intersect... (more)
  31. Why does phenolphthalein turn pink with a base? I know it has... (more)
  32. What must occur for two parents with blood type AB to have a... (more)
  33. Since the Big Bang we see (with Hubert Reeves and other... (more)
  34. Why can't an insect grow large enough to terrorize a city? (more)
  35. Why does a digital camera need a shutter- I think it should be... (more)
  36. Why does a balloon travelling inside a car seem to violate... (more)
  37. What do paper and plastic bags degrade to? How much does it cost... (more)
  38. I heard... (more)

  39. What are the urgent steps an undergrad must take to start... (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. What is "time"? Does the word "time" in Physics have the same... (more)
  43. Can you really grow plants from the seeds found in Mammoth... (more)
  44. I would like to know the amount of salt (either in ppm or %) in... (more)
  45. If matter expands when heated, and contracts when cooled, why... (more)
  46. I hear there are 9 species of cicadas in Canada, but I haven't... (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. What causes a titanium headed golf club to spark when striking a... (more)
  50. What is inside an atom? In between the electrons and the... (more)
  51. When does your skull reach its full, adult size? (more)
  52. What are water's special qualities, and how do they work? (more)
  53. I was wondering where I can find good resources on determining... (more)
  54. What is sugar? (more)
  55. In my youth, I heard a story about an experiment: you compress a... (more)
  56. Why does vitamin C not work as well if it has been heated? I... (more)
  57. My question: How will they produce plastics, tires, roads or... (more)
  58. How can I construct a simple laser beam? (more)
  59. If I knew the centre of the universe and began to travel toward... (more)
  60. If the sun is a heat source, and as the sun gets closer to the... (more)
  61. Is homosexuality inborn? (more)
  62. I do not know if this might relate to Global Warming, but I... (more)
  63. If splitting the atom can create a huge amount of energy, then... (more)
  64. I am a year 5 teacher. I was wondering if it would be ok if I... (more)
  65. Does a magnetic and/or electric field have an affect on... (more)
  66. Why does it take nerves so long to grow back, more than for skin... (more)
  67. What happens when you use ethanol (unblended) in a standard,... (more)
  68. If Pluto is not a planet, how is it classified? What is it... (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. Can you verify the scientific validity of statements I've... (more)

  75. What are some recent Canadian contributions to research and... (more)
  76. How many scientists does Canada have? (more)
  77. Ethanol is the focus of many tax dollars these days. It seems to... (more)
  78. Why is it that a difference in the number of electrons in an... (more)
  79. What exactly is gravity? Is it a wave or a ray? What exactly... (more)

  80. Hi, I was just wondering, I wanted to get into the whole... (more)
  81. We were learning about colour and light when my teacher Mlle.... (more)
  82. How long would it take for the next Ice Age to develop? (more)
  83. This question relates to global warming. Recent science news... (more)
  84. How are sand dollars bleached white? Is it by the sun or the sea? (more)
  85. What are the surfaces of Uranus and Neptune like? Is there wind... (more)
  86. The name for gas written on CNG filling station is octane. There... (more)
  87. I imagine there must be a gene for lactose tolerance in mammals... (more)
  88. Is it true that the moon moves away from the earth a few... (more)
  89. Why does salt melt ice? (more)
  90. Does a person get their blood from both parents or just one? My... (more)
  91. What process does a jellyfish go through when it stings... (more)
  92. What will happen if we use petrol in a diesel engine or vice... (more)
  93. There has been much mention of antimatter, such as... (more)
  94. I was just wondering what the ratio is between male and female... (more)
  95. How much energy in joules will be produced from an exploding... (more)
  96. Can you tell me about enhancing mental performance and cognitive... (more)
  97. Is it possible for the air that we breathe to either run out or... (more)
  98. What are the components of a fever strip and the chemical... (more)
  99. How is the spin imparted to a golf ball during the collision... (more)
  100. When a nuclear particle radiates either an Alpha, Beta or Gamma... (more)