Is Betelgeuse about to blow?

A better headline would be, "Is Betelguese about to blow, 500 years ago?"

A man from Mauna Kea says this is false.<p><a href="http://i.imgur.com/tAJpy.png" rel="nofollow">http://i.imgur.com/tAJpy.png</a>

Well the article doesn't really dismiss the idea as false, rather that it's unlikely.

Science is so boring.

If it does blow soon, and it turns out to be as bright as the sun, which is possible according to the article, might this have some impact on climate?