Suzanne K. Mast

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A multicolored shape against black background (NOAA)

Protecting the Titanic wreck site

The Titanic is an important historical artifact. Under an agreement that has now come into force, the wreck site will be protected and secured.
Illustration of NASA's quiet supersonic aircraft flying (NASA)

NASA plane: One step closer to supersonic air travel

NASA will soon begin final assembly on an experimental aircraft called X-59 QueSST that promises to produce a quieter sonic boom.
U.S. Marine dropping off toys in front of a store for a toy drive (© Sandy Huffaker/AP Images)

Americans give back during the holidays [photo gallery]

Each year, millions of Americans volunteer in their communities to help those who are less fortunate celebrate the holidays.