10 Inventions Buried by Corporations Protecting Their Profits
This listicle looks at real inventions that once showed promise but faded after corporate interests stepped in.
Engineering
12 Ancient Designs That Use Mathematics We Still Don’t Understand
Some ancient designs demonstrate mathematical precision that seems impossible given the technology of their era. The reasoning behind their construction remains a mystery even to contemporary mathematicians and archaeologists.
12 Ancient Clocks That Still Work Today
Several ancient clocks have survived for centuries and continue to keep time accurately. These mechanisms highlight the ingenuity and craftsmanship of early horologists.