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Past Stories

Past Stories by Subject

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Health & Biosciences | Natural & Human Worlds | Physics & Space Science | Scientist Profiles | Technology & Math

Natural & Human Worlds

Bird Brains

Bird Brains - July 2008
Clues to the origins of human language are turning up in the brains of birds.

Download (81.2 MB)

Capturing Carbon

Capturing Carbon - July 2008
An 8th-grader's science project prompts her scientist father to develop a new way to pull excess CO2 out of the atmosphere.

Download (78.23 MB)

Emergence

Emergence - July 2007
How does the "intelligence" of an ant colony or the stock market arise out of the simple actions of its members?

Download (74.6 MB)

First Primates

First Primates - July 2008
Our most distant primate ancestors, which took the stage shortly after the dinosaurs left it, were tree-dwellers the size of mice.

Download (84.35 MB)

Leeches

Leeches - July 2008
A century after falling out of favor among doctors, medicinal leeches are back in hospitals, sucking away on patients' wounds.

Download (71.56 MB)

Mammoth Mystery

Mammoth Mystery - July 2008
A pair of mammoth skeletons is found locked together by their tusks. What happened?

Download (79.3 MB)

Papyrus

Papyrus - November 2006
Scraps of writings from a garbage dump in ancient Egypt reveal what life was like 2,000 years ago.

Download (57.1 MB)

Profile: Julie Schablitsky

Profile: Julie Schablitsky - July 2007
Meet an archeologist who is helping to rewrite the history of the Old West.

Download (59.4 MB)

Profile: Edith Widder

Profile: Edith Widder - July 2008
Meet a marine biologist and explorer who has engineered new ways to spy on deep-sea creatures.

Download (59.37 MB)

The Search for ET

The Search for ET - July 2008
Astronomers have their radio telescopes tuned to receive signals from alien worlds. But is anybody out there?

Download (73.25 MB)

Space Storms

Space Storms - July 2008
Behind the dazzling display of the aurora borealis are space storms that could turn the lights off here on Earth.

Download (64.18 MB)

T. Rex Blood?

T. Rex Blood? - July 2007
Preserved soft tissue, including possible blood vessels and red blood cells, are turning up in dinosaur fossils.

Download (82.2 MB)

Health & Biosciences | Natural & Human Worlds | Physics & Space Science | Scientist Profiles | Technology & Math


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