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 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. Why does an ice cube melt faster in tap water than salt water? (more)
  17. Does water affect a magnet's strength? Do magnets lose their... (more)
  18. When seperating hydrogen and oxygen from water by using... (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. What is your personal view of global warming? Do you believe... (more)
  24. (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. What must occur for two parents with blood type AB to have a... (more)
  28. How did scientists conclude that a major part of our genome is... (more)
  29. Are we the center of the Universe? Does it always appear to an... (more)
  30. I have a small laser pointer. The spot produced by the beam is... (more)
  31. Why does phenolphthalein turn pink with a base? I know it has... (more)
  32. I am curious. What if two magnetic field lines were to intersect... (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. Does a person get their blood from both parents or just one? My... (more)
  36. Why does a digital camera need a shutter- I think it should be... (more)
  37. Why does a balloon travelling inside a car seem to violate... (more)
  38. What do paper and plastic bags degrade to? How much does it cost... (more)
  39. I heard... (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 are the urgent steps an undergrad must take to start... (more)
  43. How long can someone sustain without sleep? What factors would... (more)
  44. If matter expands when heated, and contracts when cooled, why... (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. I was wondering where I can find good resources on determining... (more)
  54. What are water's special qualities, and how do they work? (more)
  55. What is sugar? (more)
  56. In my youth, I heard a story about an experiment: you compress a... (more)
  57. Why does vitamin C not work as well if it has been heated? I... (more)
  58. How can I construct a simple laser beam? (more)
  59. My question: How will they produce plastics, tires, roads or... (more)
  60. If I knew the centre of the universe and began to travel toward... (more)
  61. If the sun is a heat source, and as the sun gets closer to the... (more)
  62. Is homosexuality inborn? (more)
  63. Does a magnetic and/or electric field have an affect on... (more)
  64. I do not know if this might relate to Global Warming, but I... (more)
  65. If splitting the atom can create a huge amount of energy, then... (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. I am a year 5 teacher. I was wondering if it would be ok if I... (more)
  69. If Pluto is not a planet, how is it classified? What is it... (more)

  70. What is the significance of Science in our society? (more)
  71. I understand that cancer is caused by mutations in some of... (more)

  72. I understand the concept of dominant and recessive alleles but I... (more)
  73. How do astronomers know the true position of stars? When... (more)
  74. What process does a jellyfish go through when it stings... (more)
  75. I'm doing a science project in which I'm trying to see if sound... (more)
  76. How many scientists does Canada have? (more)
  77. What are some recent Canadian contributions to research and... (more)
  78. Can you verify the scientific validity of statements I've... (more)

  79. We were learning about colour and light when my teacher Mlle.... (more)
  80. Ethanol is the focus of many tax dollars these days. It seems to... (more)
  81. Why is it that a difference in the number of electrons in an... (more)
  82. What exactly is gravity? Is it a wave or a ray? What exactly... (more)

  83. Hi, I was just wondering, I wanted to get into the whole... (more)
  84. How long would it take for the next Ice Age to develop? (more)
  85. What are the surfaces of Uranus and Neptune like? Is there wind... (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. I imagine there must be a gene for lactose tolerance in mammals... (more)
  90. Is it true that the moon moves away from the earth a few... (more)
  91. Why does salt melt ice? (more)
  92. What will happen if we use petrol in a diesel engine or vice... (more)
  93. How much energy in joules will be produced from an exploding... (more)
  94. There has been much mention of antimatter, such as... (more)
  95. I was just wondering what the ratio is between male and female... (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. When a nuclear particle radiates either an Alpha, Beta or Gamma... (more)
  100. How is the spin imparted to a golf ball during the collision... (more)