By Jennifer Bixler- CNN Medical Executive Producer
They are used to power everything from flashlights to remote controls. So called "button batteries," which are the size of coins (and sometimes smaller), have grown in popularity over the past few decades.
Republican presidential nominee Mitt Romney will travel to Lafitte, Louisiana Friday to view storm damage from Hurricane Isaac after his joint morning event with Paul Ryan in Lakeland, Florida, according to his campaign.
Nearly a million customers were without electricity due to Isaac on Thursday morning. Power providers say at least 948,564 customers are without electricity across Arkansas, Alabama, Louisiana, and Mississippi.
Authorities warned people in a handful of towns outside of New Orleans to get out early Thursday ahead of rising water brought on by hurricane-turned-tropical storm Isaac, which dumped more than 20 inches of rain in some areas.