@Masauk,
Seriously?
Wikipedia doesn't help?
What exactly do you want to know that isn't covered?
Signs of Ice Ages? You mean evidence for (#2), origin of (#1), When they were (#3), Causes of (#6) how it effected the earth (#6 through #6.7) etc etc.
It looks like anything you want to know about all the different ice ages the earth has had is all there.
Type into Good "Geology Ice Age" and you will get enough information to satisfy anyone.
1 Origin of ice age theory
2 Evidence for ice ages
3 Major ice ages
4 Glacials and interglacials
5 Positive and negative feedback in glacial periods
5.1 Positive feedback processes
5.2 Negative feedback processes
6 Causes of ice ages
6.1 Changes in Earth's atmosphere
6.2 Position of the continents
6.3 Fluctuations in ocean currents
6.4 Uplift of the Tibetan plateau and surrounding mountain areas above the snowline
6.5 Variations in Earth's orbit (Milankovitch cycles)
6.6 Variations in the Sun's energy output
6.7 Volcanism
7 Recent glacial and interglacial phases
7.1 Glacial stages in North America
7.2 Last Glacial Period in the semiarid Andes around Aconcagua and Tupungato
8 Effects of glaciation