Top 100 Questions

  1. I would like to know if the aluminum in antiperspirants... (more)
  2. Why do brown or blue eyes turn green in young adulthood? (more)
  3. Are Sedna and Quaoar two new planets? (more)
  4. In the book Cat's Cradle by Kurt Vonnegut, Jr., there is a... (more)
  5. Is it true that in total a bee's venom is acidic while a wasp's... (more)
  6. How does an analog ammeter works and how could I make one? (more)
  7. What is an aluminum lake? Does it contain aluminum? (more)
  8. How can we re-magnetize old magnets when they've lost their... (more)
  9. Is there a way to make a simple smoke bomb that isn't poisonous... (more)
  10. How many satellites orbit the earth? How many are used for... (more)
  11. What is the amount of force in foot pounds behind the average... (more)
  12. How much liquid is in the stomach? (more)
  13. At a bar a fellow was doing a bar trick in which he asked anyone... (more)
  14. I know that the genes for red hair and for blonde hair are both... (more)
  15. Is the line spectrum that is produced by a fluorescent tube the... (more)
  16. Which substance plays the most important role in making a blue... (more)
  17. Is water from a dehumidifier de-ionized? The owner's manual for... (more)
  18. Do you know of any analysis or test data available to show that... (more)
  19. Who REALLY discovered oxygen? According to an National Public... (more)
  20. How long would it take for the Earth to freeze if the Sun burnt... (more)
  21. I would really appreciate it if someone could help me make sense... (more)
  22. In my science 9 class we recently had a discussion about... (more)
  23. Why does an ice cube melt faster in tap water than salt water? (more)
  24. Why does lemon prevent the browning of apples? When browning of... (more)
  25. Are Canadian dimes made out of zinc? What about quarters,... (more)
  26. Why is the sound of fingernails scratching against a chalkboard... (more)
  27. I was and I still am wondering if there are any really complex... (more)
  28. If Entamoeba Coli is present in the human intestine can other... (more)
  29. How much heat energy (watts) is released from the human body? Is... (more)
  30. When seperating hydrogen and oxygen from water by using... (more)
  31. What is the efficiency of a typical jet engine? i.e. how much of... (more)
  32. I am interested in the transmission of RF through different... (more)
  33. Approximately how many nuclear tests do the americans alone... (more)
  34. I am curious. What if two magnetic field lines were to intersect... (more)
  35. Does water affect a magnet's strength? Do magnets lose their... (more)
  36. We have an older pop machine at work with canned soft drinks. ... (more)
  37. What is your personal view of global warming? Do you believe... (more)
  38. I heard that if you set fire to methylated spirit, it will catch... (more)
  39. I have spent 4-5 hrs. attempting to magnetize some iron (Fe)... (more)
  40. I have a small laser pointer. The spot produced by the beam is... (more)
  41. My son, age 12 is asking for a chemistry set for Christmas. This... (more)

  42. Is it possible for a wild koala bear to ignite as a result of... (more)

  43. What does cytoplasm do in the cell? (more)
  44. Why does phenolphthalein turn pink with a base? I know it has... (more)
  45. Are we the center of the Universe? Does it always appear to an... (more)
  46. Why does a digital camera need a shutter- I think it should be... (more)
  47. What is "time"? Does the word "time" in Physics have the same... (more)
  48. Why does a balloon travelling inside a car seem to violate... (more)
  49. What are the urgent steps an undergrad must take to start... (more)
  50. Why can't an insect grow large enough to terrorize a city? (more)
  51. If I knew the centre of the universe and began to travel toward... (more)
  52. When does your skull reach its full, adult size? (more)
  53. I understand the concept of dominant and recessive alleles but I... (more)
  54. What are water's special qualities, and how do they work? (more)
  55. What is inside an atom? In between the electrons and the... (more)
  56. Why does vitamin C not work as well if it has been heated? I... (more)
  57. How long can someone sustain without sleep? What factors would... (more)
  58. If splitting the atom can create a huge amount of energy, then... (more)
  59. In my youth, I heard a story about an experiment: you compress a... (more)
  60. Since the Big Bang we see (with Hubert Reeves and other... (more)
  61. If the Pluto is not a Planet. How is it classified? What is it... (more)
  62. If the sun is a heat source, and as the sun gets closer to the... (more)
  63. I am a year 5 teacher. I was wondering if it would be ok if I... (more)
  64. Can you really grow plants from the seeds found in Mammoth... (more)
  65. What do paper and plastic bags degrade to? How much does it cost... (more)
  66. I do not know if this might relate to Global Warming, but I... (more)
  67. My question: How will they produce plastics, tires, roads or... (more)
  68. Why are soccer balls coloured black and white? I heard it has to... (more)
  69. I would like to know the amount of salt (either in ppm or %) in... (more)
  70. I have conducted an experiment with a parachute. I was... (more)
  71. Why does it take nerves so long to grow back, more than for skin... (more)
  72. Ethanol is the focus of many tax dollars these days. It seems to... (more)
  73. I'm doing a science project in which I'm trying to see if sound... (more)
  74. Is homosexuality inborn? (more)
  75. How did scientists conclude that a major part of our genome is... (more)
  76. I was wondering where I can find good resources on determining... (more)
  77. What is sugar? (more)
  78. How many scientists does Canada have? (more)
  79. What is the significance of Science in our society? (more)
  80. What are some recent Canadian contributions to research and... (more)
  81. Why are a duck's feet coloured orange? (more)
  82. Does a magnetic and/or electric field have an affect on... (more)
  83. What causes a titanium headed golf club to spark when striking a... (more)
  84. How can I construct a simple laser beam? (more)
  85. How do astronomers know the true position of stars? When... (more)
  86. I have blue eyes and am the mother of a son who has blue eyes as... (more)
  87. How many active volcanoes are there at any onetime on the Earth,... (more)
  88. The name for gas written on CNG filling station is octane. There... (more)
  89. How long would it take for the next Ice Age to develop? (more)
  90. Why is it that a difference in the number of electrons in an... (more)
  91. We were learning about colour and light when my teacher Mlle.... (more)
  92. Are cats left- or right-pawed? What percentage are left... (more)
  93. I was just wondering what the ratio is between male and female... (more)
  94. Hi, I was just wondering, I wanted to get into the whole... (more)
  95. Is it true that the moon moves away from the earth a few... (more)
  96. How are sand dollars bleached white? Is it by the sun or the sea? (more)

  97. Can you verify the scientific validity of statements I've... (more)

  98. If you find a bone in an archeological dig how can u tell what... (more)
  99. This question relates to global warming. Recent science news... (more)
  100. Are double yolked eggs ever viable? Can they be fertilized? If... (more)