TIL that there are around 12kg of gold, and 21kg of silver in 4.2 cubic kilometres of seawater. You can read more about it and, at the same time, learn why the ocean is salty.
Via Hacker News.
TIL that there are around 12kg of gold, and 21kg of silver in 4.2 cubic kilometres of seawater. You can read more about it and, at the same time, learn why the ocean is salty.
Via Hacker News.