Thermal Radiation Questions

• Do humans give off radiation?
• Does an atom have a color?
• How does a microwave oven heat up food even though it emits no thermal radiation?
• How does plasma make a campfire flame orange?
• Is metal a good heat shield?
• Is there a difference between thermal radiation and infrared radiation?
• What is the color of the sun?
• What makes heat rise?
• What makes space so cold?
• When I sit by a campfire, how does its hot air heat me?
• Why does the coldest time of the year align with the darkest time of the year?
• Why doesn't my laptop emit radiation?