A perfectly-preserved silver dollar, which set a new world record for coin sales when it auctioned for $10,016,875 in 2013, is back on the market, and experts believe it might f...

Andean Condors, which weigh between 20  to 30 pounds (9 to 13 kilograms) and boast a wingspan of more than 10 feet, are one of the world's heaviest and largest flying birds.  Ye...

Invented by French teenager Louis Braille in 1824, braille has enabled millions of visually impaired kids worldwide to learn to read and write. However, the system of raised dot...