Feature

Mapping the Earth’s Magnetic Reversals

New Life for the Artificial Heart

Help to the Heart in Rejection Detection

Heroin and Crime: A Stronger Link

U.S.-Japan Whaling Accord Still in Dispute

Oral Bacteria: Germs of Endearment

Grammar-Schooled Dolphins

Putting Semiconductor Theory on a More Solid Basis

Biomedicine

Back Matter

Front Matter

Science on the Air