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Sep
28
revised Why do plants have green leaves and not red?
added 455 characters in body
Jan
11
revised Why do plants have green leaves and not red?
fixed the second link (and a typo or two)
Jan
9
revised How does laser surgery correct accommodation problems?
added the tag, removed the comment
Jan
9
revised What's the maximum and minimum temperature a human can survive?
... for our american friends
Jan
9
revised Life without DNA?
[citation needed]
Jan
9
revised How does laser surgery correct accommodation problems?
edited tags