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Milestones in the Effort to Eradicate Polio [Timeline]

Advances in the 1950s and 1960s, including unprecedented cooperation between Soviet and U.S. scientists , allowed polio to be eradicated throughout the Americas by 1994 and all of Europe in 1998. Eliminating the crippling scourge has been more difficult , however, in some parts of Africa and Asia.

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Rise of Humans 2 Million Years Ago Doomed Large Carnivores

Lions are one of just six carnivores that remain in East Africa today, compared with more than 15 species that shared the landscape before the dawn of Homo. Image: Kate Wong The impact of Homo sapiens on the environment over the past few hundred years has been so profound that some scientists term this chapter of Earth s history the Anthropocene . But humans may have begun wreaking ecological havoc far, far earlier than that.

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LinkedIn Co-founder Wants You to Invest His Money

The LinkedIn co-founder is lending $1 million to struggling entrepreneurs around the world and you can help decide who gets it. Want to lend money to a struggling entrepreneur in a developing nation without using any of your money? I did, and for a little while longer, you can too.

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The Secret, Selfish Side Of Social-Curation Sites

Here’s my beef with social platforms today: I don’t think they’re very social at all. As much as Google+, Facebook, and Pinterest promise a way to connect, they’ve also promoted a disconnect--sharing on different platforms, proving a fragmented sense of keeping tabs on any social network

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Video: 2 Rhinos Fight for Life after Their Horns Are Chopped Off

Two endangered rhinos have been critically injured and a third died after poachers in South Africa hunted the animals down and chopped off their horns. Rhino horn possession of which is banned under international law is valued for use in traditional Asian medicine to treat cancer and other disorders, even though the horns made of keratin like that in our fingernails and hair have no actual medicinal value. Still, demand is so high that horns can fetch prices higher than gold

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Poachers Kill 200 Elephants During Six-Week Spree in Cameroon

By Tansa Musa YAOUNDE (Reuters) - Poachers have killed more than 200 elephants in Cameroon in just six weeks, in a "massacre" fuelled by Asian demand for ivory. A local government official said heavily armed poachers from Chad and Sudan had decimated the elephant population of Bouba Ndjida National Park in Cameroon's far north in a dry season killing spree.

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La Nina Seems to Have Peaked and Is Set to Decline

GENEVA (Reuters) - La Nina, a weather phenomenon usually linked to heavy rains and flooding in Asia-Pacific and South America and drought in Africa, seems to have reached its peak and is expected to fade between March and May, the World Meteorological Organization (WMO) said on Friday. A weak to moderate La Nina pattern has cooled the tropical Pacific since around October, a considerably weaker event than in 2010-11, the United Nations agency said in a statement. [More]

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Spectacular Plumes of Dust Reach across the World [Slide Show]

We don't hear too much about natural dust, the kind that the winds loft from deserts and dry lakebeds into the air and carries for hundreds of kilometers, crossing oceans and continents, but we should. Plumes of dust connect the atmosphere, the oceans and the forests, and affect the most fundamental processes of life on our planet.

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North America Losing Its Oil Edge

For good or bad, from 1980-2010, North America lost some of its oil production edge. Thirty (two) years ago, this region of the world represented 20% of the world’s crude oil production

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Catching Up With Kiva

Kiva's director of social performance illuminates how the nonprofit has confronted naysayers as it expands its microlending to the U.S.

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