We have a lot of cats, so we have a lot of litter boxes. The litter we use is "World's Best Cat Litter." It's supposedly made from corn and they say it is biodegradable. Can I put this in my compost pile?

I did when I had a cat. I also used straight zeolite for cat litter. It works great. I urge you to get a compost thermometer if you do not already have one. Make sure the pile gets hot enough and for long enough to be safe.