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Communication breakdowns can be fatal for firefighters, but are all too easy when crews are shrouded in smoke and a blaze is moving fast. Florida, with its millions of acres of forest and grassland, has rolled out a new system that can pinpoint crews without relying on voice communication.

Gray wolves are a controversial and polarizing animal in much of the American West. Wolves have slowly come back from extinction, forcing people to learn how to coexist with the cunning predator. One farmer is teaching his cattle to huddle together as bison do when threatened — there is safety in numbers.

Some call Tim Walsh the disaster garbage man, but he prefers waste management specialist. After major natural disasters, the Briton comes to clean up and put people to work. Amid destruction he's seen from Indonesia to the Philippines, he's learned that there's opportunity, and hope, even in a dump.

France became the first European country this week to join a worldwide effort to destroy ivory. The goal is to send a warning to ivory traffickers and to anyone who might not consider buying it a serious crime.

The first Surgeon General's report on the dangers of smoking came out just over 50 years ago. Now a group of former surgeons generals are finding new ways to prevent smoking. Host Michel Martin speaks with two of them: Dr. Regina Benjamin and Dr. Antonia Novello.

Much of the attention on the Olympic slopestyle events has focused on snowboarders, but the downhill event is also done on skis. Devin Logan enters Tuesday's competition as the world's top-ranked female freestyle skier. And at 20, she'll compete before she can legally celebrate with a beer.

The central bank's new chair makes her first appearance before Congress since being confirmed. She'll also say that the economy picked up speed last year and will likely continue to grow at a "moderate pace" this year and next.

Carnival in Rio attracts tourists from all over the world. But there is a murky — and sometimes deadly — underbelly to the celebrations. The recent murder of a samba school official highlights the links between the glittering affair that is Carnival and the city's criminal world.

The election administration commission appointed by President Obama found no evidence that partisan plots were behind long Election Day lines, as some have suggested. Rather, some election officials simply misjudged how much equipment and personnel they needed at certain precincts.

The celebrity cook and restaurant owner lost her Food Network gig and many endorsements last year when her past use of a racial slur was revealed. She has apologized many times. Now, a private equity company has come forward with millions of dollars to restart her business empire.