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

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Twenty years ago SPF 15 was the best sun-screen, and today it's 120. Has sun-protection improved that much or just marketing. Also, how does it work?

179 upvotes

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Why is the weather so hard to predict?

17 upvotes

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Which vitamins and supplements are scientifically proven and witch are just new age?

10 upvotes

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Does a computer get slower with time. Or just our perception of it? If so, why?

3 upvotes

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Before I die I want to go to space. Is anyone working on the Space elevator, the Mass driver or the Launch loop?

2 upvotes

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Let's say another civilization's Voyager like craft would pass our solar system...

1 upvotes

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What's the hardest most durable paper-like material that's commercial available.

1 upvotes

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Colonies on the Moon and Mars; can the human body handle the gravity?

1 upvotes

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I'm pretty bored with this planet; Is there anyway theoretical way Einstein was wrong and we could travel at "warp speed"?

1 upvotes

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If there are "no straight line" in nature, why are our brain so fantastic at seeing them.

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Twenty years ago SPF 15 was the best sun-screen, and today it's 120. Has sun-protection improved that much or just marketing. Also, how does it work?	179
Why is the weather so hard to predict?	17
Which vitamins and supplements are scientifically proven and witch are just new age?	10
Does a computer get slower with time. Or just our perception of it? If so, why?	3
Before I die I want to go to space. Is anyone working on the Space elevator, the Mass driver or the Launch loop?	2
Let's say another civilization's Voyager like craft would pass our solar system...	1
What's the hardest most durable paper-like material that's commercial available.	1
Colonies on the Moon and Mars; can the human body handle the gravity?	1
I'm pretty bored with this planet; Is there anyway theoretical way Einstein was wrong and we could travel at "warp speed"?	1
If there are "no straight line" in nature, why are our brain so fantastic at seeing them.	1