How do you shield against radiation?

Related questions

1. Is radium used in glow sticks?
2. Is Cherenkov radiation always blue?
3. Why does radium glow at night?
4. What is the most radioactive isotope?
5. Why are spent fuel rods more dangerous?
6. Does sunlight charge glow in the dark?
7. Who was blamed for Chernobyl?
8. Is there anything that can stop radiation?
9. How long does it take for radiation to dissipate?
10. Why radioactive waste is dangerous?

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18. #thicknesses