Electrodynamic Tethers in Space
By exploiting fundamental physical laws, tethers may provide low-cost electrical power, drag, thrust, and artificial gravity for spaceflight
By exploiting fundamental physical laws, tethers may provide low-cost electrical power, drag, thrust, and artificial gravity for spaceflight
Patients can get relief from pain or overcome their phobias by immersing themselves in computer-generated worlds
Genomic studies of the world's major grain crops, together with a technology called marker-assisted breeding, could yield a new green revolution
New burrowing nuclear weapons could destroy subterranean military facilities--but their strategic and tactical utility is questionable
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
Lawrence M. Krauss speaks about unfinished business
Arsenic in drinking water could severely poison 50 million people worldwide. Strategies being tested in Bangladesh might help prevent the problem