I am studying how animals (including the human beings) can perceive distances thanks to their eyes and their ears. I am focusing on the fact that they always go in pairs: two eyes, two ears, etc.

About the sight, I think our eyes use the parallax. But is this enough? Is this the only way we can perceive distances with them?

About the sounds, I think it is merely by interferometry, but I am not convinced, because the distances between our ears and the wavelength are not always comparable to one another.

What do you think about it?
Thanks in advance,

Isaac


Question: How to add blogger's RSS feed to facebook profile/page
Answer: At this point, Facebook does not let you add an RSS feed to automatically do that. 
I would recommend using a tool like IFTTT which does it very well!