SYDNEY (Reuters) - Scientists studying Antarctic waters have filmed and captured giant sea creatures, like sea spiders the size of dinner plates and jelly fish with six meter (18 feet) tentacles.

A fleet of three Antarctic marine research ships returned to Australia this week ending a summer expedition to the Southern Ocean where they carried out a census of life in the icy ocean and on its floor, more than 1,000 meters (yards) below the surface.

LONDON (Reuters) - Luxury carmaker Porsche may legally challenge London mayor Ken Livingstone's decision to tax gas guzzling cars driving in the city centre to help fight global warming.

Porsche said on Tuesday the 25 pound ($48.74) daily charge was unfair, would not cut emissions of climate warming carbon dioxide and would deter businesses from moving to the city.

HANOI (Reuters) - Dead poultry have been found in rivers and streams in northern Vietnam, a sign of a possible new bird flu outbreak during a prolonged cold spell, officials said on Tuesday.

The Agriculture Ministry said in a report that callers to an animal health department hotline reported large numbers of dead birds in five provinces, but was not specific.

GENEVA (Reuters) - Climate change threatens the human rights of millions of people who are at risk of losing access to housing, food and clean water unless governments intervene early to counter its effects, experts said on Tuesday.

At a conference on climate change and migration, United Nations officials said rising sea levels and intense storms, droughts and floods could force scores of people from their homes and off their lands -- some permanently.