Ben Affleck is a part of the Global Poverty Project's Live Below The Line campaign, and will be living on $1.50 dollars a day during the campaign, to show his support.
"1.4 billion people live on less than $1.50/day. I'm  joining Live #BelowTheLine on behalf of @easterncongo. Will you?", he  wrote on Twitter. The challenge is meant to "give a glimpse into the  lives of 1.4 billion people who have no choice but to live below the  line every day - and who have to make $1.50 cover a lot more than food",  according to the website.
Other celebrities that are a part of the campaign is 
Josh Groban and 
Hugh Jackman.
