1991 July – December

A Shameful Harvest: America's Illegal Wildlife Trade { America's Illegal Wildlife Trade: A Shameful Harvest}
Seeking trophy heads, souvenirs, and profits, poachers are attacking our country's wild animal populations. Undercover operations catch a few violators, but the siege threatens to become a slaughter.
Jumping Spiders { All Eyes on Jumping Spiders}
They leap on unsuspecting prey in midair. They boast see- all panoramic vision. They are the remarkable jumping spiders - - one of the most colorful and acrobatic families of arachnids.
Germany- -The Morning After { The Morning After: Germany Reunited}
Wrenched apart after World War II, Germany is again one nation. But the merger of diverse political and economic systems is challenging the ingenuity of the German people. A double supplement map highlights historical and cultural attractions.
Maya Artistry Unearthed
Beneath pyramid ruins at Copan in Honduras, temples yield offerings unseen for 1, 400 years, including clay figurines and flaked stonework of incomparable craftsmanship.
Medical Donors: A New Kind of Kinship { A New Kind of Kinship}
Organ and tissue donors save thousands of lives each year and make possible innovative research aimed at combating disease. But demand is great, and more donors are urgently sought.

Pittsburgh- -Stronger Than Steel
Former king of steel, Pittsburgh paints on a bright new face with riverside parks, high- tech laboratories, and gleaming corporate headquarters, yet vibrant old neighborhoods endure.
Ibn Battuta, Prince of Travelers
In an epic adventure that lasted three decades, a 14th- century Muslim scholar roamed 75, 000 miles through Africa and Asia - - one of the world's great journeys of exploration.
Return to Pearl Harbor { Pearl Harbor: A Return to the Day of Infamy}
Fifty years after the surprise attack that drew the United States into World War II, American and Japanese survivors share recollections of that fateful day. A map supplement details key events in the global conflict.
Australia's Magnificent Pearls
Farming oysters in the nutrient- rich tides off their northwest coast, Australians produce lustrous South Sea treasures - - the world's largest cultured pearls.
High Frontier of the Rain Forest Canopy { Rain Forest Canopy: The High Frontier}
Penetrating a little- known realm more than a hundred feet up in the trees, scientists are unlocking secrets of plants and animals that never touch ground.