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The International Union for Conservation of Nature found more than one in three tree species worldwide faces extinction. ... The loss of trees is a threat to thousands of plants, fungi and animals ...
In 2009, UNEP mobilized action across the globe through the "Twitter for Trees" campaign. UNEP pledged to plant one tree to feed into the Billion Tree Campaign for every follower who joined from 5 May 2009 to World Environment Day on 5 June 2009. The campaign was a success, with 10,300 people following the page by World Environment Day. [16]
Its initial target was the planting of one billion trees in 2007. Only one year later in 2008, the campaign's objective was raised to 7 billion trees—a target to be met by the climate change conference that was held in Copenhagen, Denmark in December 2009. Three months before the conference, the 7 billion planted trees mark had been surpassed.
For the 300 years following the arrival of Europeans, land was cleared, mostly for agriculture, at a rate that matched that of population growth. [7] During the 19th century, while the U.S. population tripled, the total area of cropland increased by over four times, from seventy-six million to three hundred nineteen million acres.
World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.
The island of Hispaniola was first colonized by humans 6,000 years ago and the population size was likely more than one million when the European colonists first arrived in 1492. [6] Those original inhabitants used trees and caused extinctions of birds and mammals. [11] [12] Nonetheless, the greatest deforestation occurred after 1492. [8]
The extinction of C 3 plant life is likely to be a long-term decline rather than a sharp drop. It is likely that plant groups will die one by one well before the critical carbon dioxide level is reached. The first plants to disappear will be C 3 herbaceous plants, followed by deciduous forests, evergreen broad-leaf forests, and finally ...
Image credits: thootly #5 Orangutans Self-Medicate. A Sumatran Orangutan in Indonesia has been observed healing a nasty wound on its face by making a paste from a native plant known to locals as ...