Greenpeace said Monday it had filed a lawsuit against the South Korean government for denying entry to half a dozen key campaigners and seeking to "silence" criticism of its nuclear policies.

The environmental group said it wanted recognition from the court that Seoul's decision to bar six Greenpeace staff was a violation of freedom of expression and international human rights.

A team in Japan are hoping pedal-power will beat the world record for a human-propelled plane -- in a flying machine made from polystyrene, they said Monday.

Team Aeroscepsy say a professional mountain biker will pilot their "Gokurakutombo", which has a wingspan half that of a Boeing 747 jumbo jet, in a voyage they hope will clock up 120 kilometers (75 miles).

Geologists said Monday a Japanese nuclear plant may be sited over an active seismic fault, indicating that it will probably be scrapped.

All five experts tasked by the Nuclear Regulation Authority (NRA) with investigating the tectonic situation underneath Tsuruga plant in Fukui prefecture said it showed signs of geologically recent movement.

2012 will go down in history as a landmark year, when physicists discovered a fundamental particle that may answer one of the greatest riddles of all.

Investigators believe their discovery to be the long-coveted Higgs Boson, an invisible particle that explains the mystery of mass.

North Korea said Sunday it was considering postponing a planned long-range rocket launch originally set for between December 10 and 22, citing unspecified problems during preparations.

The Korean Committee for Space Technology said its scientists and engineers were "considering seriously the possibility of readjusting the launch period".

A U.N. conference passed a package of agreements on Saturday combating climate change and extended the life of the Kyoto Protocol, the only binding pact on curbing Earth-warming greenhouse gas emissions, its chairman said.

Agreement on the modalities of a Kyoto "second commitment period," which seeks to rein in climate change pending a new global pact due to enter into force in 2020, concluded 12 days of tough haggling in Doha.

One of Kenya's best known private game reserves in Kenya announced Friday a plan to fly unmanned surveillance drones to monitor and protect critically endangered rhinos from rampant poaching.

Ol Pejeta, a 90,000-acre non-profit private wildlife conservancy in central Kenya's Laikipia District, holds four of the world’s last remaining seven northern white rhinos.

Frustration grew Friday with the Qatari hosts of U.N. climate talks stuttering towards a close in Doha, for failing to instil a sense of urgency in negotiators preparing themselves for a long night.

As some delegates urged conference chairman Abdullah Bin Hamad al-Attiyah to take matters in hand, he quipped in a stock-taking session: "I am not in a rush. I am at home. My house is only 10 minutes driving distance so I'd love you to stay here more days."

Animal rights activists on Friday renewed calls for a Singapore casino complex to free dolphins it acquired for a marine park, threatening to campaign for a boycott if their demand is ignored.

The Animal Concerns Research & Education Society (ACRES) of Singapore claimed the bottlenose dolphins were "being housed in appalling conditions, in tiny barren swimming pools" at Resorts World Sentosa (RWS).

NASA, the agency that epitomized the "Right Stuff," seems lost in space and doesn't have a clear sense of where it is going, an independent panel of science and engineering experts said in a stinging report Wednesday.

The one place the White House wants to send astronauts — an asteroid — doesn't seem to be getting the engines firing at NASA, they said.