top | item 18866058 High-tech border wall plan on display at CES 1 points| SonnyWortzik | 7 years ago |phys.org | reply 1 comment order hn newest [+] [-] SonnyWortzik|7 years ago|reply Necessity is the mother of all inventions. I am glad to see some are skipping politics and actually trying to solve this with some intelligence.
[+] [-] SonnyWortzik|7 years ago|reply Necessity is the mother of all inventions. I am glad to see some are skipping politics and actually trying to solve this with some intelligence.
[+] [-] SonnyWortzik|7 years ago|reply