the last ice age hasn't ended yet! Scientists call this ice age the Pleistocene Ice Age. It has been going on since about 2.5 million years ago (and some think that it's actually part of an even longer ice age that started as many as 40 million years ago).
A magazine would be infact, considered a secondary source! Hope that helps!
Where were some of the earliest origins of agriculture and why did they occur in those locations?
One of the ancient place on Earth where the presence of humans was discovered is Ur and Uruk cities. So, some of the earliest origin of agriculture occur near those cities located in Messopotamia. Messopotamia is a place located near rivers Tigris and Euphrates. At that time is was a very fertile zone.