/u/That_Lego_Guy_Jack's posts in /r/askscience

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Since humans are so good at surviving, why didn’t other regions of earth evolve separate humanoid species that were also intelligent? Why did every intelligent primate die out? And why don’t non-mammals have things like hands and long endurance running?

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With limitless fuel and our fastest rocket at its top speed, how long would it take for a shuttle to reach out closest stellar neighbor?

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Do frequent injuries lead to an increased risk of cancer?

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Yobibyte or Geopbyte, which is bigger?

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What fuel burns for the longest?

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If you were to replace every bone in your body with a metal, such as steel, aluminum, or chromium, what health effects would you see?

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I’ve heard that if antimatter comes into contact with regular matter that it would explode. How violent would this explosion be? Say if a gram of antimatter was to run into a gram of sand what would happen?

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How can I get the sodium out of kirkland pure sea salt?

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Why are human immune systems so bad?

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If the boiling point of water is 100C, 212F, and 373.1K, then what happens at 99.999999C, 211.999999F, and 373.099999K? Is it a spectrum of not boiling to boiling or is there a hard line?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Since humans are so good at surviving, why didn’t other regions of earth evolve separate humanoid species that were also intelligent? Why did every intelligent primate die out? And why don’t non-mammals have things like hands and long endurance running?	1
With limitless fuel and our fastest rocket at its top speed, how long would it take for a shuttle to reach out closest stellar neighbor?	1
Do frequent injuries lead to an increased risk of cancer?	1
Yobibyte or Geopbyte, which is bigger?	1
What fuel burns for the longest?	1
If you were to replace every bone in your body with a metal, such as steel, aluminum, or chromium, what health effects would you see?	1
I’ve heard that if antimatter comes into contact with regular matter that it would explode. How violent would this explosion be? Say if a gram of antimatter was to run into a gram of sand what would happen?	1
How can I get the sodium out of kirkland pure sea salt?	1
Why are human immune systems so bad?	1
If the boiling point of water is 100C, 212F, and 373.1K, then what happens at 99.999999C, 211.999999F, and 373.099999K? Is it a spectrum of not boiling to boiling or is there a hard line?	1