Squamous cell carcinoma of the skin is a common form of skin cancer that develops in the squamous cells that make up the middle and outer layer of the skin. Squamous cell carcinoma of the skin is usually not life-threatening, though it can be aggressive in some cases.
Glass - Glass, including Pyrex, can be used in the microwave. While there have been some rumors floating around the internet that Pyrex can explode, if you use the cookware in a reasonable and expected manner, you do not have to worry about this.
Most microwaves have a 'potato' setting. I use that and then crisp up the skin with the oven. Using the setting for 1 potato, if I'm making two. Depends on your microwave/the power level/ and the programed settings, so there's really no hard answer.