Melissa Block As special correspondent, Melissa Block produces richly reported profiles of figures at the forefront of thought and culture, as well as stories and series on the critical issues of our day. In addition, she is a guest host on NPR news programs.

Tom DeBaggio, a herb and gardening expert, was diagnosed with early onset Alzheimer's disease in 1999. 1999 File photo/Washington Post via Getty Images hide caption

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1999 File photo/Washington Post via Getty Images

A Decade Of Alzheimer's Devastating Impact

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Perriello visited constituent Irene Lewis last week to wish her a happy 105th birthday. Her granddaughter says Lewis still plants her own tomatoes. Art Silverman/NPR hide caption

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Art Silverman/NPR

GOP Gunning For Virginia's Perriello In Midterms

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Anders Osborne performs at the 2010 New Orleans Jazz and Heritage Festival. Rick Diamond/Getty Images hide caption

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Rick Diamond/Getty Images

A 'Patchwork' Tour Of New Orleans With Anders Osborne

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Anxiety Runs High Among Gulf Coast Fishermen

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The brown pelican, which completely disappeared from Louisiana by the 1960s largely because of DDT, was listed as an endangered species — but then young pelicans were transplanted from Florida and the species gradually recovered. Now environmentalists are worried that the oil spill may reach the the Breton National Wildlife Refuge where brown pelicans nest. iStockphoto.com hide caption

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iStockphoto.com

Oil Threatens Brown Pelican Off Of Louisiana Coast

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Mose Allison: Train, Babe, Brain

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Whale Kills Trainer At SeaWorld

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Justice Downgrades Criticism Of Bush-Era Lawyers

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Half-Pipe Routine Highlights Dangers At Games

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Unknown Iran Protest Death Filmers Win Polk Award

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Switzerland's Defago Wins Downhill Gold

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Marines Continue Afghan Offensive

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Forces Launch Operation In Afghanistan

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Offensive Launched Against Taliban Stronghold

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