Interesting Engineering27 分钟
Baltimore’s new 2-mile bridge to replace collapsed structure, will last 100 years
With an extended total length of 2 miles (3.22 kilometers), up from the original 1.7 miles (2.74 kilometers), the bridge will ...
Racism prevented Black performers from staying at Strip hotels, so some stayed at this ...
The Harrison Guest House accommodated Black entertainers who were — outside of performing — barred from Las Vegas Strip ...