ABC News will be live from St. Peter's Square on Saturday with coverage of Pope Francis' funeral mass as the world celebrates his legacy. Watch “Celebrating Francis: The People’s Pope" Saturday at 3:30AM ET on ABC. | ABC News

With so much at stake, thank you for making us America’s #1 Most Watched Newscast | World News Tonight with David Muir on ABC. | ABC World News Tonight with David Muir

Researchers from a new study say they found that consuming the preservatives used in foods such as deli meat, bacon and cereal is associated with a higher risk of developing cancer. David Muir reports. | ABC World News Tonight with David Muir