How have the values and needs of contemporary society influenced the focus of scientific research?

ear protection strategies

100

Ear protection that are used in F1 races for fans

what are ear muffs

200

A technology that are in air-pod pros to reduce noise 

what is Active Noise Cancellation

300

Ear protection for F1 drivers 

What are custom ear plugs.

400

Ear protection that was used in WW2 

what are foam earplugs 

500

the first known ear protection strategy from Ancient Greece

what is beeswax