Ben Affleck, Sophia Bush and Josh Groban
PictureGroup; Getty (2)
04/24/2013 AT 09:05 AM EDT
plans to live on $1.50 a day – and he wants you to join him.
While the Oscar winner
could certainly afford much more, Affleck is joining other celebrities to shine a light on poverty through the Global Poverty Project's Live Below the Line
campaign. That figure represents the extreme poverty line in the U.S. as estimated by the World Bank.
of his efforts: "1.4 billion people live on less the $1.50/day. I'm joining Live #BelowTheLine on behalf of @easterncongo. Will you?" He plans to feed himself on $1.50 for one day, following in the footsteps of other celebrities who have joined the cause to raise awareness of issues of inequality and poverty around the world.
Jonah Hill, Josh Groban, Sophia Bush
and The Avengers
actor Tom Hiddleston – who Tweeted earlier this month
photos of his scant meals – are among the other celebrities who have said they are participating in the campaign.
, who sits on the Global Poverty Project's board, kicked off the $1.50 day living challenge in 2011, appearing in public service announcements for the campaign. Others active in this year's project drive are Cooking Channel chefs Debi Mazar and Gabriele Corcos
More than 20,000 people are expected to participate this year, Time.com reported
, noting that more than $3 million was raised for the project last year. The GPP, on its Facebook page,
says currently 1.2 billion people around the world live in extreme poverty, down from 1.4 billion five years ago.