Responses to the West African Ebola virus epidemic being curated by the Data Science Group of the Thomas J. Watson Research Center. International Mutual Aid is a US-based 501 (c) (3) nonprofit, conducting Ebola treatment, surveillance, contact tracing, and case investigation in Kono District, Sierra Leone, during the epidemic. On 14 August, the Nigerian government said Aliko Dangote had donated $1 million to halt the spread of the Ebola virus outbreak. Facebook founder Mark Zuckerberg and his wife Priscilla Chan have announced a donation of $25 million to the CDC Foundation to fight the Ebola crisis. On 29 October a South African businessman, Patrice Motsepe, donated $1 million
The World's Billionaires fourth. America's Christy Walton was the highest ranking woman, placing ninth overall. Aliko Dangote of Nigeria became the first African ever to enter the top 25, with an estimated net worth of $25 billion. A total of 1,645 people made the 2014 billionaire list, representing combined wealth of $6.4 trillion. Of those, a record 268 were newcomers, surpassing 2008's 226 newcomers. One hundred people listed in 2013 failed to make the list. The number of women on the list rose to a record 172 in 2014. Approximately 66 percent of the list was self-made, 13 percent achieved their wealth through