Iran will start dismantling parts of its uranium stockpile next week after details of an interim deal on its nuclear programme were finalised over the weekend.

Fine sediment clay within the Japan Trench plate boundary megathrust fault, was a key factor in triggering the devastating Fukushima tsunami in March 2011, according to a new study involving Otago University researchers.

Mexican nuclear official have said a stolen container of radioactive material has been found empty.

Saudi Arabia dislikes the deal the West has cut with Iran for two reasons.

Responding to his critics, President Barack Obama forcefully defended the nuclear agreement with Iran, declaring that the United States "cannot close the door on diplomacy."

On Sept 18, 1980, two airmen entered Launch Complex 374-7, an underground silo outside Damascus, Arkansas, to service a Titan II intercontinental ballistic missile.

Japan's hopes of fixing its nuclear leaks at Fukushima rest on an ambitious plan to build a 3.2km frozen underground wall.

Environmental columnist Sam Judd takes a look at the disastrous consequences of the Japan earthquake on our food chain.

A year on, Michael Dickison finds a Government keen to improve its world image while its citizens struggle on.

John Key finally got to chat with US President Barack Obama - the pair swapped....