tpo10-3《Seventeenth-Century European Economic Growth》

tpo9-1《Colonizing the Americas via the Northwest Coast》

tpo8-3《Running Water on Mars》

TPO8-2《Extinction of the Dinosaurs》

TPO8-1《The Rise of Teotihuacán》

tpo7-3《Agriculture, Iron, and the Bantu Peoples》

tpo7-2《Ancient Rome and Greece》