July 2002

Black Holes Spin?

That's only one of several incredible new surprises about these whirlpools of darkness

by Robert Kunzig

More


July

Departments

Vital Signs

It wasn't pregnancy and it wasn't cancer. What was it?
by Stewart Massad

Bogglers Solutions

by Scott Kim

NeuroQuest

by Eric Haseltine

Bogglers

by Scott Kim

Reviews

Sky Lights

Time to let go of matter—emptiness is what rules the universe
by Bob Berman

The Chemistry of . . . Blood

The first safe substitutes for blood are ready to start flowing
by Lisa Davis

Future Tech

Can Big Brother see right through your clothes?
by Ivan Amato

Letters