Israel's air force on Sunday introduced a fleet of huge pilotless planes that can remain in the air for a full day and could fly as far as the Persian Gulf, putting rival Iran within its range.

Israel's air force on Sunday introduced a fleet of huge pilotless planes that can remain in the air for a full day and could fly as far as the Persian Gulf, putting rival Iran within its range.

Researchers have proposed a new project for analyzing Martian soil samples -- the "Search for Extraterrestrial Genomes" based on the theory that life on Mars – if there is any – may be composed of "island species" that were carried away from Earth on interplanetary meteorites.

The Obama administration said Thursday that it would ask the Senate to ratify the Comprehensive Nuclear Test Ban Treaty, more than a decade after President Bill Clinton failed to convince the treaty’s opponents that the American arsenal could deter adversaries without ever setting off nuclear explosions.

The author examines the validity of the claims that an electo-magnetic pulse bomb presents an immediate threat to U.S. infrastructure, arguing that "advocates for EMP preparation could end up being their own worst enemy.'"

Science fiction sometimes depicts robot soldiers as killing machines without conscience or remorse. But at least one robotics expert today says that someday machines may make the best and most humane decisions on the battlefield.

The brains trust of the Pentagon says it is just months away from producing a jet fuel from algae for the same cost as its fossil-fuel equivalent. A cheap, low-carbon fuel would not only help the US military, the nation's single largest consumer of energy, to wean itself off its oil addiction, but would also hold the promise of low-carbon driving and flying for all.

A new way of using the genetic code has been created, allowing proteins to be made with properties that have never been seen in the natural world. The breakthrough could eventually lead to the creation of new or "improved" life forms incorporating these new materials into their tissue.

A high-powered laser aboard a modified Boeing Co 747 jumbo jet shot down an in-flight ballistic missile for the first time, highlighting a new class of ray guns best known from science fiction.

Researchers at Texas A&M University’s Nuclear Security Science and Policy Institute have attached radiation sensors to the backs of cockroaches. They hope public-safety officials will one day send the souped-up insects into situations that are too risky for humans.