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Can we run out of helium on Earth? What happens when we do?
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If you start with good vision as you approach your 40s, is it possible to exercise your cornea as you age to keep your ability to near-view focus and avoid having to rely on reading glasses or bifocals?
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Can we run out of helium on Earth? What happens when we do?
27
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10
9
8
7
6
5
4
3
2
1
0
If you start with good vision as you approach your 40s, is it possible to exercise your cornea as you age to keep your ability to near-view focus and avoid having to rely on reading glasses or bifocals?
1
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10
9
8
7
6
5
4
3
2
1
0
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