The weather always changes. Climate is a different animal altogether.The Climate always changes. No one knows what the human contribution is and even if you did you aren't going to move the needle much when the humans contributing the most greenhouse gasses are doing the least to stop it.
Gun control? When the guns hop down the streets by themselves shooting people I will agree with you that controlling the guns would be a logical solution to stop mass shootings.
Why do Americans absolutely need a military rifle for defense? A pistol or even a coach gun could do the trick
A semi automatic works great on wild hogs. A handgun for self defense.