Our Home Planet

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Three rounds: Quick Start, Risk or Reward, and a final wager. Questions have a 20-second answer clock; the final question has 30 seconds. There is no pause.

Use each lifeline once: 50/50 removes two wrong answers; Ask the Hosts removes one. Only one lifeline per question.

Safe earns 100 points without a loss. Bold risks 250 points and needs a 250-point balance. All In doubles or loses your balance and needs more than 250 points. The final wager uses 50-point steps.

Local results are not saved or ranked. Once loaded, play continues offline. Refresh or leaving starts over.

Show icon for Our Home Planet Our Home Planet

Earth is an ever-changing place. How much do you know about your home planet?

Sample questions


  1. Aerosols are tiny solid or liquid particles suspended in the atmosphere. How can large concentrations of aerosols affect the temperature of Earth’s atmosphere?
  2. A phytoplankton bloom consists of a large number of microscopic plants floating on the upper, sunlit layers of the ocean. Such blooms indicate the onset of:
  3. Which has more land: the Northern or Southern Hemisphere?

Use the Start Show button above to start playing!

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