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. How does an analog ammeter works and how could I make one? (more)
  6. Is it true that in total a bee's venom is acidic while a wasp's... (more)
  7. Is there a way to make a simple smoke bomb that isn't poisonous... (more)
  8. How many satellites orbit the earth? How many are used for... (more)
  9. What is an aluminum lake? Does it contain aluminum? (more)
  10. How can we re-magnetize old magnets when they've lost their... (more)
  11. Is the line spectrum that is produced by a fluorescent tube the... (more)
  12. What is the amount of force in foot pounds behind the average... (more)
  13. How much liquid is in the stomach? (more)
  14. I know that the genes for red hair and for blonde hair are both... (more)
  15. At a bar a fellow was doing a bar trick in which he asked anyone... (more)
  16. Do you know of any analysis or test data available to show that... (more)
  17. Is water from a dehumidifier de-ionized? The owner's manual for... (more)
  18. What is your personal view of global warming? Do you believe... (more)
  19. Are cats left- or right-pawed? What percentage are left... (more)
  20. Why are a duck's feet coloured orange? (more)
  21. How long would it take for the Earth to freeze if the Sun burnt... (more)
  22. Who REALLY discovered oxygen? According to an National Public... (more)
  23. If Entamoeba Coli is present in the human intestine can other... (more)
  24. Why are soccer balls coloured black and white? I heard it has to... (more)
  25. How much heat energy (watts) is released from the human body? Is... (more)
  26. Why is the sound of fingernails scratching against a chalkboard... (more)
  27. Why does an ice cube melt faster in tap water than salt water? (more)
  28. Are Canadian dimes made out of zinc? What about quarters,... (more)
  29. I was and I still am wondering if there are any really complex... (more)
  30. Why does lemon prevent the browning of apples? When browning of... (more)
  31. Why does salt melt ice? (more)
  32. I have spent 4-5 hrs. attempting to magnetize some iron (Fe)... (more)
  33. I am interested in the transmission of RF through different... (more)
  34. Approximately how many nuclear tests do the americans alone... (more)
  35. In my science 9 class we recently had a discussion about... (more)
  36. Is it possible for a wild koala bear to ignite as a result of... (more)

  37. We have an older pop machine at work with canned soft drinks. ... (more)
  38. I'm a switcher. On January 7, 2003 Apple announced a new small... (more)
  39. Does water affect a magnet's strength? Do magnets lose their... (more)
  40. Are we the center of the Universe? Does it always appear to an... (more)
  41. I know that superconducting wires present their zero-resistance... (more)
  42. What is the efficiency of a typical jet engine? i.e. how much of... (more)
  43. I heard that if you set fire to methylated spirit, it will catch... (more)
  44. I would really appreciate it if someone could help me make sense... (more)
  45. What is the chemical formula for milk? (more)
  46. What is "time"? Does the word "time" in Physics have the same... (more)
  47. What are water's special qualities, and how do they work? (more)
  48. What is the effect of sound on plants? I have come up with a... (more)
  49. When seperating hydrogen and oxygen from water by using... (more)
  50. I am curious. What if two magnetic field lines were to intersect... (more)
  51. I have blue eyes and am the mother of a son who has blue eyes as... (more)
  52. What is inside an atom? In between the electrons and the... (more)
  53. My son, age 12 is asking for a chemistry set for Christmas. This... (more)
  54. I'm doing a science project in which I'm trying to see if sound... (more)
  55. Which substance plays the most important role in making a blue... (more)
  56. I understand the concept of dominant and recessive alleles but I... (more)
  57. What are the urgent steps an undergrad must take to start... (more)
  58. Why does a digital camera need a shutter- I think it should be... (more)
  59. What is the significance of Science in our society? (more)
  60. I am a year 5 teacher. I was wondering if it would be ok if I... (more)
  61. Why does a balloon travelling inside a car seem to violate... (more)
  62. What is sugar? (more)
  63. Why does it take nerves so long to grow back, more than for skin... (more)
  64. Is it true that the moon moves away from the earth a few... (more)
  65. What does cytoplasm do in the cell? (more)
  66. When does your skull reach its full, adult size? (more)
  67. How long would it take for the next Ice Age to develop? (more)
  68. Why can't an insect grow large enough to terrorize a city? (more)
  69. What does the epiglottis do? (more)
  70. If the sun is a heat source, and as the sun gets closer to the... (more)
  71. How many scientists does Canada have? (more)
  72. I was just wondering what the ratio is between male and female... (more)
  73. I have conducted an experiment with a parachute. I was... (more)
  74. What causes a titanium headed golf club to spark when striking a... (more)
  75. Since the Big Bang we see (with Hubert Reeves and other... (more)
  76. Hi, I was just wondering, I wanted to get into the whole... (more)
  77. How long can someone sustain without sleep? What factors would... (more)
  78. Is homosexuality inborn? (more)
  79. What are some recent Canadian contributions to research and... (more)
  80. I do not know if this might relate to Global Warming, but I... (more)
  81. Could you please tell me what is inertia? Will it bring us more... (more)
  82. Does the temperature of a magnet affect its strength? (more)
  83. If splitting the atom can create a huge amount of energy, then... (more)
  84. What it the chemical composition of styrofoam? What raw material... (more)
  85. How is the spin imparted to a golf ball during the collision... (more)
  86. How are sand dollars bleached white? Is it by the sun or the sea? (more)
  87. I have a small laser pointer. The spot produced by the beam is... (more)
  88. What do paper and plastic bags degrade to? How much does it cost... (more)
  89. In my youth, I heard a story about an experiment: you compress a... (more)
  90. I spilled some iodine disinfectant on my vinyl tile floor. As... (more)
  91. Does a magnetic and/or electric field have an affect on... (more)
  92. In winter in very cold countries like Canada and Finland, most... (more)
  93. How did scientists conclude that a major part of our genome is... (more)
  94. How do "bath bombs" work? Why do they fizz when placed in water? (more)
  95. I imagine there must be a gene for lactose tolerance in mammals... (more)
  96. Regarding the behaviour of a high-voltage spark. I have a device... (more)
  97. We're doing a study on future transportation at school, KTH in... (more)
  98. Can you really grow plants from the seeds found in Mammoth... (more)
  99. If I knew the centre of the universe and began to travel toward... (more)
  100. Why does vitamin C not work as well if it has been heated? I... (more)