Geological Maps - reading layers in the landscape
19:09
Drawing a cross-section across northern England
20:35
Basic map interpretation - Lycoming County sheet
10:01
Geological Maps - recognising folds
33:01
The Man Who Almost Broke Math (And Himself...)
15:00
Europe's most devastating geo-disaster - Lisbon 1755
31:33
O Mais Antigo Problema Não Resolvido da Matemática
27:15
O Conceito Mais Mal Compreendido da Física
9:10