Recent Questions

• How bright is a rainbow?
  October 12, 2026
• Is there much difference between vision in daylight and in the dark?
  June 16, 2026
• How does a coin know to land heads half of the time?
  January 24, 2025
• What is the difference between a law, a principle, a theory, and a hypothesis in science?
  July 24, 2024
• What is the most stable nucleus?
  July 23, 2024
• How can I tell if I have depression or just normal sadness?
  June 27, 2024
• Does everything get smashed to bits when two galaxies collide?
  June 25, 2024
• Where do ocean tides get their energy from?
  June 11, 2024
• Where does the atmosphere end? Where is the edge of space?
  June 6, 2024
• What are some fake-science headlines that reappear regularly?
  May 15, 2024
• How can glass produce glare without reflecting light?
  April 19, 2024
• Why is the speed of light a random finite number?
  February 7, 2024
• Is mental illness really an illness?
  January 8, 2024
• Is there a difference between thermal radiation and infrared radiation?
  December 13, 2023
• When does light travel in a straight line?
  November 22, 2023
• Are there any massless particles?
  October 23, 2023
• Why don't the gases in the atmosphere separate out according to mass?
  September 19, 2023
• Why does a person with only one working eye have zero depth perception?
  July 28, 2023