The question “at first struck me as too open-ended to be usefully addressed by standard economics,” said Charles Jones of Stanford. He took a shot anyway.

Here is a simple-looking visual trick challenges your perception of two lines. What you see may surprise you, revealing how ...

The width refers to drill hole intercepts; true width cannot be determined due to the uncertain geometry of mineralization. GS2506 was drilled to the north to infill the deposit in the Cleary area ...