If you're question is 'why can increased CO2 lead to colder weather in Texas?' There's a huge difference between describing average temperatures (what people d

If you're question is 'why can increased CO2 lead to colder weather in Texas?' There's a huge difference between describing average temperatures (what people describe as 'global warming') and describing the temperatures on any specific day. Previously, a strong jet stream air current trapped cold polar air far north of Texas (which is say 30' North latitude). As the pole's warm, the jet has become pone to weakening allowing cold polar air to move very far south e.g. 90'N to 30'N in Texas, which sits east of the rocky mountains in the US. Effects like this are why a lot of people are using the term 'climate change' more frequently. Because an increase in CO2 means more than just an average higher surface temperature. Weather changes and instabilities will grow more common, with a bias to warmer events over all. Think of it as the 'variance in the weather' is growing along side the mean weather (temperature) is going up. Yes, as an American I'll agree our politics has plenty of instabilities as well.