'Are we headed for an ice age?'
Simple answer, YES.
I'm a 'science junky'. It prolly has something to do with my profession where I work with the Laws of Physics everyday and 'a' + 'b' always = 'c', and 'X' x 'Y' always = 'Z'. And no guessing or 'computer modeling' is required to 'prove' that E=mc2 works every time.
And as a science junky, in my spare time I watch the Science Channel like addicts chase their next fix. And the 'SC" has numerous series on the Earth and our Climate. They're directly related, climate specific, or as a byproduct of some series on our Solar System and/or Cosmology.
Long story short;
We are coming OUT of a naturally occurring warming period, and entering a naturally occurring Cooling Period. These cyles have repeated and repeated since our present Earth, ver 2.0, was created along with the moon approx 4.5 Billion years ago.So. Are we headed for an ice age? You betcha(1). Unfortunately these Real Scientists can't predict when, as in how soon, it will happen.
During this time we've even had periods called 'Ice Ball Earth' where the Earth was like one 'HUGH' snowball. Every spot, even at the equator, was covered in snow or ice. Scientists (real ones /s), know of one period of Ice Ball Earth' for positive and there's evidence that it may have happened twice.
(1) Al Gore, please pick up the Red Courtesy Phone.
There is a place in northwest Oregon called Mist. Very, very small town; outside of town is an Elk Preserve. My reason for mentioning this place is the seashells preserved in the ground thereabouts, exposed in stream beds due to erosion.
Eight thousand years ago an arm of the sea reached far inland at that locale. During that time the sea level along the Oregon coast was 15 feet higher than it is today. Fifteen thousand years ago the sea level was much lower than today; in fact, you would have to go about 24-26 miles further west of the present coastline to reach the Ice Age coastline (15,000 before present) of Oregon.
Yes, it is getting colder.