Subject / Started by
Columbus & a Round (or Flat) Earth.

Started by Yaakov ben Avraham « 1 2 »

Coriolis Effect

Started by HHunter « 1 2 3 4 »

Maths

Started by Pleaseexplain « 1 2 »

Circumnavigation

Started by BillyBob « 1 2 »

Unipolar, bipolar, disc, square, infinite plane?

Started by Yaakov ben Avraham « 1 2 3 4 »

"Empirical" Evidence

Started by SadPanda « 1 2 3 »