Seven things you can do to help solve the Hum
1. Do some historical research for the Hum Database. Read this: https://hummap.wordpress.com/2014/04/01/do-you-have-any-experience-conducting-basic-historical-research-help-needed/
2. Help me find an acoustics expert who can explain how to create a portable box, big enough for a person to get inside, that will block most sound, including low frequency sounds.
3. Help me find a radio engineer who can confirm the physics I present here: https://hummap.wordpress.com/2014/04/02/here-is-the-physics-for-computing-the-thickness-of-mild-steel-required-for-vlf-shielding/
4. Contact the authors of this paper and ask them what has happened with their theory or experiments of it: https://hummap.wordpress.com/2014/04/01/this-article-if-im-right-will-be-a-key-piece-in-solving-the-hum/
5. Help me find an experimental radio physicist who can give advice on welding VLF-proof containers.
6. Help me take a fully laid-out web page in another language and install it as a mirrored-subdomain on my site and then do the SEO for it.
7. Find an industrial acoustic expert who can answer this question: please describe the range, intensity, and behaviour of sound and infrasound created by different industrial processes over and through various surface geographies including mountains and valleys, including earth of differing conductivities and composition, and fresh and salt water.