'Higher than usual' radiation levels reported at Chernobyl after Russians seize nuclear plant

Ukrainian authorities said that Russia took the plant and its surrounding exclusion zone after a fierce battle.

UN experts arrive in Japan to review plans for release of Fukushima water

The team will meet with Japanese officials and visit the Fukushima Daiichi plant.

World War II bomb found at site of Japan's Fukushima nuclear plant

A bomb disposal team has been sent in to make the scene safe.

Explosion at French nuclear plant causes injuries but no 'radiation risk'

Several people were injured but there was no radiation leak at the plant in Flamanville.

'The fear that I felt almost six years ago came back': Relief as tsunami warning lifted in Japan

The powerful 6.9-magnitude earthquake sparked fears of a repeat of the 2011 disaster.

Calls for Sellafield to be closed down after investigation exposes safety concerns

BBC Panorama found that radioactive materials have been stored in degrading plastic bottles.

Scores of people feared buried alive after second earthquake

Homes, roads and railway lines were swept away as hillsides collapsed.

Children from Chernobyl to arrive in Ireland today for rest and recuperation

The children travel to Ireland every year to stay with Irish families during the summer months.

Here’s What Happened Today: Monday

Everyone’s talking about a distressed teenager found outside the GPO, penalties for jobseekers and the merits of cannabis legalisation.

Fukushima leak upgraded to a "serious incident"

The nuclear regulator in Japan had originally given it a rating of Level 1, an ‘anomaly’.

Greenpeace activists arrested in France after nuclear plant break-in

Activists hung banners reading “Tricastin: a nuclear accident” and “Francois Hollande: president of a catastrophe?”.

Building eight nuclear power plants in the UK poses little threat to Ireland

A report by the Radiological Protection Institute of Ireland looked at the impact day-to-day operations would have on Ireland and what would happen in the event of a severe nuclear accident.

Sellafield nuclear waste warning

Operators failed to dispose of radioactive waste properly, as cost of decommissioning site rises, says watchdog.

In pictures: media take tour of Japan's tsunami-hit nuclear plant

The devastating scenes included twisted and overturned trucks and piles of rubble.

Japanese MP drinks water collected from Fukushima plant

Yasuhiro Sonoda drank decontaminated water taken from a radioactive puddle in the crippled Fukushima nuclear power plant during a news conference – to prove it was safe.

Power plants to be restarted by Japan as officials admit Fukushima meltdown

The move to restart power units at plants near to Fukushima come in a bid to meet electricity supply demand over the summer months.

Workers enter stricken Japanese nuclear plant for the first time

The plant’s operator said workers were installing six ventilation machines today in an attempt to absorb radiation from the air inside the building.

Japan begins repair work on damaged nuclear reactors

Workers are constructing systems around the crippled Fukushima plant in order to begin repairs – however officials have warned that it could take a year to get the plant fully under control.

Radioactive water from Fukushima "not gushing into sea"

Authorities say they have plugged the crack which caused radioactive water to leak into the nearby sea at the Fukushima nuclear power plant.

Newspaper and sawdust being used to plug leak at Japanese nuclear power plant

There are more desperate attempts to plug the leaks of radioactive material with officials now saying they plan to release contaminated water into the sea.

Review of Japanese radiation measurements ordered

Latest figures show that radiation exceeding government safety limits has seeped into groundwater at the Fukushima nuclear plant.

Prayers for Japan at US nuclear accident commemoration

The disaster at Three Mile Island on this day in 1979 “taught plant operators many valuable lessons”.

Japan continues to struggle with contaminated water at nuclear complex

As problems continue at the stricken nuclear complex, a fresh earthquake hit the country earlier today and prompted a tsunami warning.

'No quick fix' at Fukushima nuclear plant

Restoring power to all six units at the Japanese power station is vital – but some of the cooling system’s key pumps now need to be replaced entirely.

Japan's meteorological agency says winds will carry radiation to sea