Foods to Avoid. When youâre feeling a bit wired, avoid foods containing caffeine, alcohol, sugars, and processed ingredients. Caffeine is a stimulant that can produce a jittery feeling that might amp up your anxiety.
The Ice Ages began 2.4 million years ago and lasted until 11,500 years ago. During this time, the earthâs climate repeatedly changed between very cold periods, during which glaciers covered large parts of the world (see map below), and very warm periods during which many of the glaciers melted.
There is a myth that ice ages covered the whole earth in ice. The theory says they only covered as much as 30%. The theoretical extent of these ice sheets during the ice age 1.5 mya is shown in white on the map below. Ice ages are said to have occurred every 150 million years, and last for at least 1 million years. According to the ice age theory, our current warm period will end with the beginning of another cold phase in 23,000 years time. Geologists claim that there have been 5 major ice ages.