Optimists Really Do Live Longer, Say scientists

B A C D B D A C

Ward off Travel Bugs

C A B D D A C E

A Baby’s Growth

D B A E D C A B

Heartbeat of America

A C F D F A E C

Why Does Food Cost So Much?

E D B A D A E F

English and English Community

F D A C B A D E

Blasts from the Past

B C D E A B C D

Screen Test

A B C D C D E F

Intelligence: a Changed View

C A F E D F B A

Smoke Gets in Your Mind

D A F E B A D F

The Magic io Personal Digital Pen

F B A C D E A F

Icy Microbes

E A F D B C E A

A Strong Greenhouse Gas

E F C D A B F E

How We Form First Impression

D C B A E D C B

Lung Cancer

E C B F D A C E

Surgery Involving the Heart

C B E A C B A E

China Seeks Donors to Narrow Bone Marrow Gap

D B E A F D B C

Aspirin — a New Miracle Drug

D B F A E C F A

The Safeness of IUDs for HIV-positive Women

B A C E E A D B