Japanese officials have confirmed a second hydrogen explosion has occurred at the Fukushima Daiichi nuclear power plant, while a warning of a second tsunami has been cancelled.

More than half a million people have been forced from their homes in quake and tsunami-hit northern Japan, petrol has run dry and supermarkets are empty in what its prime minister says is the worst crisis to hit Japan since WWII.

Japanese officials warned of a possible second explosion at a nuclear plant crippled by the earthquake and tsunami as they raced to stave off multiple reactor meltdowns, but they provided few details about whether they were making progress.

Three nuclear power plants in Japan have suffered failure, with a top Government official warning a meltdown at one of the plants was "highly possible". Over 10,000 people are thought to be missing as officials fight to avoid a catastrope

It is starting to feel like elements of Hiroshima, Kobe and the Asian tsunami combined.

Lord Hunt writes on the need to understand the Chinese policy on climate change.

Organs and bones were illegally harvested from the bodies of dead nuclear industry workers.

Germany has seen one of its largest anti-nuclear demonstrations in 30 years.

Iran's ambitions to become a nuclear superpower edged closer to realisation yesterday.

From the Western perspective, China has been unwilling to shoulder responsibilities that go with greater international power.

Barack Obama has a vision of a fundamental US energy makeover, moving from fossil fuels such as coal and oil to renewable sources including solar and wind.