Typically, no matter how thick the Styrofoam is, it will melt at some point. Also, Styrofoam has been proven to contain chemicals that can leach into the food, even when stored, but especially when heated that can have a negative effect on health as well as reproduction.
Styrofoam is not digestible. The body will eliminate it before it would be digestible. Styrofoam should not be consumed under any circumstances.
It's best to use a styrofoam container with a lid. Styrofoam will not get as hot as glass or plastic.
1/2 pound per person if only serving pasta, otherwise 1/3 pound per person. You will have extra, but its better than running out. Get take-away boxes if its feasible. Those white styrofoam take-home boxes are great and guests love taking home food (depends on your venue though).
Styrofoam is not renewable. It is plastic, made from oil, a fossil fuel. Plastics can be recycled but recycling of domestic styrofoam is often difficult as many recycling plants will not take it.
400 YEARS.... !
500 years
It will take 400 years.
30 %
Yes, styrofoam is full of air cells and air is a good thermal insulator. Styrofoam has poor solvent resistance, and poor hot performance.
It takes around 12,000 years
Yes, but it can take more than 1 million years, so might as well not use it.
If you put them in the microwave for 30 seconds then take them out and put them on, they form to your feet, that is why people microwave their shoes.