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jpa
  • Member for 6 years, 9 months
  • Last seen more than 5 years ago
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96
Why don't we use weights to store energy?
52
A planet you can take off from, but never land back
52
How do you know you have reached North or South Pole without GPS?
51
What are the benefits of tracking solved bugs?
49
If I sliced the universe in half, would the slice go through a star?

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