It was back to the drawing board for Australian scientists Monday after another breeding season for giant pandas failed to produce results at the Adelaide Zoo.

Wang Wang and Funi arrived in Australia on a decade-long loan from China in late 2009 and there were hopes of breeding the Southern Hemisphere's first baby pandas.

A brand new commercial cargo ship making its orbital debut experienced navigation system trouble Sunday, and its arrival at the International Space Station was delayed at least two days.

The rendezvous was aborted less than six hours before the scheduled arrival of Orbital Sciences Corp.'s Cygnus capsule, packed with 1,300 pounds of food and clothes for the space station crew.

Several thousand Bucharest residents got on their bikes Saturday, criss-crossing the streets of the Romanian capital in a protest to demand the creation of bicycle lanes in the congested city.

"I have a car but I prefer to ride my bike," said a protester who gave his name only as Alexandru. "But sometimes that is very dangerous because there are no bicycle lanes. If there were, the city would be less built up, less polluted and more civilized."

A Japanese town abandoned after the Fukushima nuclear accident has protested Prime Minister Shinzo Abe's global promise that the situation of the crippled plant was "under control", papers reported Saturday.

The town assembly of Namie, half of which sits within the 20-kilometer (12-mile) zone around the nuclear plant, unanimously adopted a statement of protest against Abe's remarks on Friday, saying his comments went against facts on the ground, the Asahi and the Mainichi papers said.

The upcoming U.N. report on climate change is not likely to rattle U.S. deniers of global warming who hold sway in the halls of power, experts say.

A hefty analysis of the latest science on global climate change, the report is packed with recommendations for policymakers.

The amount of ice in the Arctic Ocean shrank this summer to the sixth lowest level, but that is much higher than last year's record low.

The ice cap at the North Pole melts in the summer and grows in winter; its general shrinking trend is a sign of global warming. The National Snow and Ice Data Center said Friday that Arctic ice was at 1.97 million square miles (5.1 million sq. kilometers) when it stopped melting late last week.

The U.S. Environmental Protection Agency proposed Friday to limit carbon dioxide emissions from new power plants, in a bid to implement President Barack Obama's plan to fight climate change.

The move marks the "first milestone" of a major part of the Climate Action Plan announced in June by the U.S. leader, the agency said in a statement.

NASA has given up on the Deep Impact spacecraft, which suddenly went silent after nine years of exploration.

The space agency said Friday the mission is over for Deep Impact, which in 2005 smashed a comet with a projectile to give scientists a peek of the interior. The spacecraft went on to rendezvous with two more comets.

Three cannons explode on a deserted Cape Cod beach, unleashing a startling cloud of white smoke and sand. In tandem, projectiles erupt from the ground, flinging a net over a group of elusive shorebirds known as red knots.

A dozen wildlife researchers emerge from hiding and sprint to transfer the prized catch into holding boxes and then to a camp nearby. There, they collect feather samples as they measure, weigh and tag the robin-size birds, then fit their legs with tiny geolocators and release them.

The Obama administration is pressing ahead with tough requirements for new coal-fired power plants, moving to impose for the first time strict limits on the pollution blamed for global warming.

The proposal would help reshape where Americans get electricity, away from coal and toward cleaner sources of energy. It's a key step in President Barack Obama's plans to address climate change.