Pop legend Madonna has joined a chorus of international stars in urging the release of 30 Greenpeace crew members jailed after a protest against energy prospecting in the Arctic.

Relatives of two Greenpeace activists detained with 28 others in Russia over an Arctic oil drilling protest have told of their heartbreak over their extended detention.

The 30 people arrested following a Greenpeace protest at a Russian oil rig in the Arctic have been transferred to St. Petersburg, Greenpeace International and Russian transport officials said.

David Cameron is urging Vladimir Putin to make sure that 30 Greenpeace activists imprisoned in Russia can come home.

We keep hearing that the Greenpeace activists arrested and charged with piracy by the Russian Government are peaceful protesters. Bollocks, says Rodney Hide.

Two Kiwis protesting against deep-sea oil drilling are caught in the middle of a high-stakes power play.

Russia has dropped piracy charges against jailed Greenpeace activists - including two New Zealanders - and charged them with hooliganism instead.

A Greenpeace-commissioned report shows dramatic blow-out effects of a deep-sea oil spill, but the industry says it's "science fiction".

One of the New Zealand Greenpeace activists being detained in Russia has been refused bail.

The partner of a New Zealander charged with piracy by Russian officials sobbed yesterday as she told a protest her partner is a peaceful man.

Jude Law and Damon Albarn have added their voices to calls for the release of 30 Greenpeace activists, including two New Zealanders, detained in Russia.

Greenpeace said about 200 people turned out at a protest in Wellington in support of activists being held in Russia.

Charges of piracy have been laid against 30 Greenpeace activists arrested by Russian authorities, including two New Zealanders.

A Russian court ordered seven more crew members of a Greenpeace ship to be detained for two months over an open sea protest against Arctic oil drilling.

'I've always wanted my name in lights in the big city.' Minister Simon Bridges laughs off a Greenpeace billboard accusing him of misleading Parliament.

Six Greenpeace protesters who scaled Britain's tallest building were last night in police custody.

Economic modelling based on ethanol, which has its limitations as a fuel, may underestimate the potential yields and value added, writes Brian Fallow.

Actor Lucy Lawless says her sentence for boarding a drilling ship while protesting against Shell's oil exploration plans is "a total victory".

Labour says it has not taken a position on whether to back the United States proposal for a large reserve in the Antarctic's Ross Sea.