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2011 Earth Day events included an environmental forum for local political leaders and the first-ever Earth Day celebration in Tunis City and primary school events throughout Iraq. In 17 of the world's most severely deforested countries, Earth Day Network completed a project to plant over 1.1 million trees. Across the globe, more than 100 ...
Millions of people participated in the first Earth Day celebration on April 22, 1970. The event shut down Manhattan’s Fifth Avenue, as people demonstrated and participated in street clean-ups.
A less severe cold period or ice age is shown during the Jurassic-Cretaceous (150 Ma). There have been five or six major ice ages in the history of Earth over the past 3 billion years. The Late Cenozoic Ice Age began 34 million years ago, its latest phase being the Quaternary glaciation, in progress since 2.58 million years ago.
(The following events also fall into this period.) 48,000–28,000: Mousterian Pluvial wet in North Africa 26,500–19,000: Last Glacial Maximum, what is often meant in popular usage by "Last Ice Age" 16,000–13,000: Oldest Dryas cold, begins slowly and ends sharply (B-S) 12,700: Antarctic Cold Reversal warmer Antarctic, sea level rise: 12,400
The first official Earth Day happened a year after his initial idea for a national teach-in, on April 22, 1970. The beauty of recycling: Practice your 'R's' for Earth Day. Why is Earth Day on ...
In 1970, during the first official Earth Day celebration, roughly 20 million Americans, which was about 10% of America's population at the time, participated in demonstrations or celebrations of ...
The Pleistocene (/ ˈ p l aɪ s t ə ˌ s iː n,-s t oʊ-/ PLY-stə-seen, -stoh-; [4] [5] referred to colloquially as the Ice Age) is the geological epoch that lasted from c. 2.58 million to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations.
A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate between glacial periods. The Last Glacial Period ended about 15,000 years ago. [1]