Electrodynamic Tethers in Space
By exploiting fundamental physical laws, tethers may provide low-cost electrical power, drag, thrust, and artificial gravity for spaceflight
Features
Health
Virtual-Reality Therapy
Patients can get relief from pain or overcome their phobias by immersing themselves in computer-generated worlds
Back to the Future of Cereals
Genomic studies of the world's major grain crops, together with a technology called marker-assisted breeding, could yield a new green revolution
Nuclear Bunker Buster Bombs
New burrowing nuclear weapons could destroy subterranean military facilities--but their strategic and tactical utility is questionable
Next Stretch for Plastic Electronics
Organic semiconductor devices can make more than just bendable displays. They will find use in wearable electronics, chemical sensors, skin for robots and innumerable other applications
Space
Questions That Plague Physics: A Conversation with Lawrence M. Krauss
Lawrence M. Krauss speaks about unfinished business
Arsenic Crisis in Bangladesh
Arsenic in drinking water could severely poison 50 million people worldwide. Strategies being tested in Bangladesh might help prevent the problem
Departments
- Letters
Letters
Erratum
- Advances
A Plan for Water
Anonymous Trust
Bumpy Flying
Sloshing in Space
May Cause Wakefulness
I Don't Brake for Bogotá
Salmon versus Salmon
Sexual Healing
Soaping up without Guilt
Machine Made
- Recommended
Speaking for the Animals
- Skeptic
Miracle on Probability Street
- Anti Gravity
One Hundred Years of Magnitude
- 50, 100 & 150 Years Ago
Oppenheimer Judged -- Kelvin Corrected -- Agassiz Contradicted
- Perspectives
The Green Gene Revolution
- In Brief
Data Points: SetiHome at Five
Brief Points: August 2004
- Innovations
Penny-wise Smart Labels
- By the Numbers
Middle of the Country
- Technicalities
Crippled but Not Crashed
- Working Knowledge
Seeing Inside
- Insights
From Finish to Start
- Ask the Experts
Ask the Experts: August 2004