From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish. The stage is set in Denver for the first presidential debate tonight at 9:00 p.m. Eastern. The candidates are suiting up, reporters are gathering, live tweeters are sharpening their virtual pencils. And NPR's Mara Liasson is in Denver and she joins us for a preview. Welcome, Mara.
MARA LIASSON, BYLINE: Hi, Audie.
CORNISH: So what is the format for tonight's debate?
On a farm in Waitsfield, Vt., in 1945, a Merchant Marine cook named Ralph Ellison was resting after his tour of duty.
"One morning scribbling, I wrote the first sentence of what later became The Invisible Man: 'I am an invisible man,' " Ellison recalled in an interview for National Educational Television.
He wrote that his protagonist — a Negro, as Ellison always put it — was young, powerless and ambitious for the role of leadership, a role at which he was doomed to fail.
Across a swath of northern Nigeria, a humanitarian catastrophe is unfolding, as lead from illegal gold mines sickens thousands of children.
More than 400 kids have died, and many more have been mentally stunted for life.
Doctors Without Borders, which has set up clinics to treat the children, is calling it one of the worst cases of environmental lead poisoning in recent history.