US jets drop unarmed bombs on Great Barrier Reef

US fighter jets dropped four unarmed bombs on Australia's Great Barrier Reef in an "emergency jettison" during a training exercise, officials said on Sunday, ruling out any risk to the public or environment.

Syria's online troops wage counter-revolutionary cyber war

Sometimes, attacks in Syria's bloody civil war start not with a bullet or a bomb blast, but with an innocuous-looking email. A message pings into an inbox, apparently from a friend or colleague. The recipient clicks a link, ...

Power of US tornado dwarfs Hiroshima bomb

Wind, humidity and rainfall combined precisely to create Monday's massive killer tornado in Oklahoma. The awesome amount of energy released dwarfed the power of the atomic bomb that leveled Hiroshima.

Ammonia: Fertiliser to be handled with care

Fertiliser manufacturing has been implicated in a string of disasters prior to the deadly explosion on Wednesday that wrecked a facility in Texas.

New radioactive waste leak found in tank at Hanford nuclear site

An aging tank of high-level radioactive waste is leaking at the Hanford nuclear site in south-central Washington state at the rate of up to 300 gallons a year, federal authorities disclosed Friday after discovering a dip ...

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