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This photograph of Abraham Lincoln was taken by Anthony Berger at Mathew Brady's Washington gallery on February 9, 1864. This photograph was adapted for use as the face portrait on a five-dollar bill.

Airs Monday, November 14, 2011 at 10 p.m. & 11 p.m. on KPBS TV

Ham Radio Volunteers Worry About Spectrum Plan

Amateur radio operators are helping to restore emergency communication in some of the areas hardest hit by the tornadoes in the South. But those volunteers say their ability to provide that help is threatened by a new bill in Congress.

A Libyan girl brings bread into her tent at the U.A.E. Red Crescent refugee camp at the Tunisian village of Dhuheiba on April 22.

Libyan War Creates Far-Reaching Refugee Crisis

More than 600,000 people have fled the fighting in Libya, international agencies say — triggering one of the largest refugee crises seen in the past 20 years. Dealing with the displaced has stoked an already-hot political debate about immigration in Europe.

The Alpha Magnetic Spectrometer is loaded into the vehicle that would take it to the space shuttle launchpad on March 15. The $2 billion cosmic ray detector will be carried to the International Space Station on Endeavour's final flight.

On The Shuttle, A $2 Billion Bid To Find Antimatter

The Alpha Magnetic Spectrometer will collect cosmic rays and was designed to search for antimatter created during the Big Bang. The project was nearly scrapped, but the persistence of one key researcher kept it alive. It will be carried to the space station aboard space shuttle Endeavour's final flight.

Two Photojournalists Killed Covering Battle In Libya

Tim Hetherington, co-director of the documentary Restrepo, and Chris Hondros, a photographer for Getty Images, were killed in the besieged city of Misrata. The circumstances surrounding their deaths were unclear. Doctors said two other photographers were treated for shrapnel wounds.

Greg Marinovich and Joao Silva are members of "The Bang-Bang Club," a group of photographers who covered the civil war in South Africa and the waning days of apartheid. Silva snapped this photo shortly before South Africa's first nonsegregated election in April 1994.

Two War Photographers On Their Injuries, Ethics

Combat photographer Joao Silva is at Walter Reed Army Medical Center, where he's recovering after losing his legs in an explosion in October. Greg Marinovich is a Pulitzer Prize-winning photographer who was shot four times while covering conflicts. Silva and Marinovich talk about life as war photographers with Fresh Air's Terry Gross.

Several studies have attempted to determine whether there is a link between cellphone use and brain cancer. But thus far, the findings have been inconclusive — and even contradictory.

The Jury's Still Out On A Cellphone-Cancer Link

Despite years of research, there is not a single conclusive study linking cellphone use and brain cancer — or one that rules it out. Siddhartha Mukherjee discusses the ongoing quest to determine whether cellphones are carcinogenic, and why finding specific causes of cancer is so difficult.

Cover of the new posthumous novel from David Foster Wallace.

Looking For Something To Read?

The new posthumous novel from David Foster Wallace and the critically acclaimed novel from a 26 year old make our guest's suggested reading list.

Oceanographer Sylvia Earle, photographed in an underwater vehicle, in the "Journey To Planet Earth" series.

Journey To Planet Earth: Plan B: Mobilizing To Save Civilization

Airs Monday, April 18, 2011 at 10:30 p.m. on KPBS TV

Michael Dickinson, a manager for Williams Companies Inc., visits the Lathrop compressor station near Wilkes-Barre, Pa. The facility helps to move natural gas from local wells to market.

Nuclear Woes Could Propel Quest For Natural Gas

The ongoing nuclear disaster in Japan may undermine support for nuclear power in the U.S. But it could accelerate the natural gas boom already under way in the Marcellus basin — a 400-million-year-old shale formation stretching from New York to Kentucky.

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