New kind of device.

If you are studying the field of men fertility, then perhaps you could create a device which increases mens fertility rates. A device you put your scrotum on.

Make sure you develop something that truly works, is backed by science and has done enough tests with positive results.

It affects approximately 7% of all men. (just Google for most recent studies).

So far I have found some fertility tests that popped up when I was looking for male fertility devices etc.