Brazil's military continued work on a nuclear bomb after it was ordered to scrap the program in 1985 and by 1990 had nearly finished building one, according to a leading Brazillian nuclear scientist.
The far-fetched theory that nanotechnology could lead to a 'grey goo' catastrophe has captured the public imagination despite being discredited by scientists.
The author warns that global warming could paradoxically bring about an ice age by disrupting the North Atlantic current.
Researchers at the University of Iowa are using artificial intelligence programs to create computer simulations of human soldiers to help test the performance of future U.S. Army combat systems.
North American scientists are considering whether to implant stem cells from a human embryo into a mouse embryo ? a controversial experiment that could result in a mouse-human mix reminiscent of mythological monsters.
A nuclear attack on New York City wouldn't be enough to stop stock trading, if the New York Stock Exchange gets its way. It's thinking of moving from its home of the past 210 years to build a second exchange, perhaps in an underground bunker, so the market could open the day after.
The author introduces a new philosophy of technology, 'technogaian', which is an optimistic blend of libertarian, hyper-capitalist Internet culture and the holistic, life-giving and life-affirming mysticism of Gaia, the Earth Mother of ancient Greek mythology.
Nobel laureate John Polanyi argues that the agreement between U.S. and Russia to establish a shared ballistic missile early warning center may help make missile defense unnecessary.