How does a plastic comb attract paper? plus 9 more videos.

Electric Charge - How does a plastic comb attract paper?
Nuclear fusion - Why is nuclear fusion not used to generate electricity?
Sound - Why do we hear echoes?
Concave Mirror - Why is your reflection upside down on a spoon?
Buoyancy - Can you drown in the dead sea?
Light and Sound - Why do we see lightning before thunder?
Heat transfer - Why do we use a black umbrella in summer?
Heat transfer - Why are cloudy nights warmer than clear nights?
Heat - Why is a laboratory thermometer not used to check body temperature?
Specific heat of water - Why is water used in hot water bags?