Needless to say, there is no critique of the Miller-Urey experiment nor evaluation of its claims; and there is no presentation here of all sides of the evidence as required by Texas's science curriculum standards.
So Pytheas, the mathematician of Marseilles, started off on his northern trip. Unfortunately, his diary and book called The Circuit of the Earth have perished, and our story of geographical discovery is the poorer. But these facts have survived.
Pytheas is the first known scientific visitor and reporter of the Arctic, polar ice, and the Germanic tribes. He introduced the idea of distant Thule to the geographic imagination, and his account of the tides is the earliest known to suggest the moon as their cause. Pytheas may have reached Iceland.