Comment But there was no ice in the 1500's (Score 1) 145
Forgive me for the attention-seeking headline, but I've read very interesting things about Antarctica and its ice sheets.
Primarily, there were maps made in the 1500's that closely resemble an ice-free Antarctica. They document mountains we've detected in the 1900's by sonar, and reflect the Antarctic coastline closely.
If these maps are correct, and there was no ice in the 1500's... how were these ice cores found?
If the ice cores were found, and they date back to 1000 AD, how were these maps made with knowledge of Antarctica having no ice?
I'm very curious. One good article I found is here:
http://www.diegocuoghi.it/Piri_Reis/PiriReis_Hoye-Lunde.htm
Quite plausibly, it seems that the maps are, in fact, not maps of Antarctica. I wonder how that affects the arguments given... thoughts?