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Bill Gates Gives $100 Million to Fight Alzheimer's Disease

New Information Adds to Understanding of Black Holes

People Showing Concern about Disappearing Plant Life

Three man who had a big influence on modern sound and communication technologies

How the 'Mercury 13' Led the Way for Women in the US Space Program

A Visit to America’s National Cryptologic Museum

Ancient Martian Conditions Could Have Supported Life

The most unusual national parks in the United States

Laser Technology Uncovers Secrets at Stonehenge

Plastic Recycling

New Orleans, Havre de Grace: American Places That Hold Special Memories

Music Would Not Be The Same Without the Guitar

The History of the Laser

Nam June Paik Turned Video into an Object of Art

A Visit to Two National Parks: Mount Rainier and Valley Forge

Voyager: The Extraordinary Story of a Flight Around the World

How English Evolved Into a Modern Language

Where Did the English Language Come From?

The Missouri is America’s Longest River

Lighthouses Keep Watch Over the North Carolina Coast

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