Feature

Mission Misdirection

Prospects Dim for Live AIDS Vaccine

Fake Sperm Fool Female Butterflies

Bacteria under Ice: Some Don’t like It Hot

Lab-Grown Bladders Prove a Success in Dogs

Depression Proves Risky for Ill Hearts

Tiny Turnstile Spits out Solo Photons

Supersonic Defects Have the Right Stuff

Feds Plan Battle against Aliens

No Beginnning in Sight for Star Formation

Sea Change in the Arctic

AAAS