Feature

Self Cells Ease Parkinson’s in Monkeys

Front Matter

Eruptions Cleared Path for Dinosaurs

Earth Science

Science News Books

Pearl-like Bacteria Are Largest Ever Found

Biomedicine

Digging Bait Worms Reduces Birds’ Food

Can This Swamp Be Saved?

Inca Mummies Emerge from Deep Freeze

Back Matter

Correction: Prospects Dim for Live AIDS Vaccine