Executives working for Elon Musk have been advised not to seek a higher security clearance for him due to concerns about his drug use and contact with foreign nationals, according to reports.

According to the report, Musk has been violating the rules set out by his "top secret" security clearance for years. Musk was even denied high-level security access by the Air Force, according to ...

Musk has reportedly failed to cooperate with security clearance reporting rules, hiding info on things like meetings with foreign leaders. According to disclosure stipulations, Musk is required to ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Joshua Lyon Joshua Lyon is a writer covering home and decor. He's also ...

A mathematician at Yonsei University, in Korea, claims to have solved the moving sofa problem. Jineon Baek has posted a 100+-page proof of the problem on the arXiv preprint server. Most people who ...