Global Warming. Fact or fiction??

[SnesTea]

Fact or Fiction: Both.

The world is warming up. However, it may be because of industrializing nations in Africa, Asia, Oceania, and South America, not necessarily the lone fault of the United States or other world powers.

Additionally, if it isn't because of that factor, then we can assume that the temperature of the sun is increasing.

People say that glaciers are melting. Is that fact? Maybe.

My stance:

Riddle me this, if global warming is truly existent, then why was it snowing in Houston, Texas last week? If anything, the world is getting colder.