CAPE CANAVERAL, Fla. — Bad weather is once again delaying space shuttle Discovery's trip home.

Mission Control decided to skip this morning's first touchdown opportunity because of rain that developed just before daybreak near the Florida landing strip. Fog was also a concern.

Commander Alan Poindexter and his crew were instructed to take another swing around the world, in hopes the weather would improve.

If the sky does not clear up at Kennedy Space Center, NASA will send Discovery and its seven astronauts to the backup landing site in Southern California. They're wrapping up a 15-day resupply mission to the International Space Station.

Monday's landing attempts were thwarted by rain.

BEIJING — China ordered flags be flown at half-staff and a halt to all entertainment, including online games and sports events, for a national day of mourning Wednesday to honor the more than 2,000 people killed by a devastating earthquake in a remote Tibetan region.Similar arrangements were made two years ago following a larger and deadlier earthquake in southern China's Sichuan province that left nearly 90,000 dead or missing. Such high-profile displays of government concern are also likely aimed at tamping any potential unrest among the mostly Tibetan victims.Tibetan anger over political and religious restrictions and perceived economic exploitation by the ethnic majority Han Chinese have sometimes erupted in violence.The death toll from the massive April 14 quake in remote Yushu county in Qinghai province, high on the Tibetan plateau, rose Tuesday to 2,046, the provincial press center reported. More than 12,000 were injured and 196 people were still missing, it said. By China's measure the quake was a magnitude 7.1, while the U.S. Geological Survey put it at 6.9.