Do you ever bake? The method for cooking food with dry heat.
I've always been curious. After burning one too many batches of simple cookies I tend to shy away from the oven.
You can also barbecue in the oven.
Really? I have always envisioned barbecues as being outside, accompanied by a roaring flame and copious amounts of alcohol. 
Yes as long as its done slowly over low indirect heat.
Maybe I will have to give it a try sometime; I didn't know ovens could be so versatile!
Yes, oven have been around since 29,000 BC.