AP - Researchers said Thursday they have identified the remains of Nicolaus Copernicus by comparing DNA from a skeleton and hair retrieved from one of the 16th-century astronomer's books. The findings could put an end to centuries of speculation about the exact resting spot of Copernicus, a priest and astronomer whose theories identified the Sun, not the Earth, as the center of the universe.

AP - Spacewalking astronauts performed more repair work on a jammed joint at the international space station on Thursday, keeping a tight grip on all their tools so nothing would get away this time. A $100,000 tool bag was lost during the first spacewalk of the shuttle-station mission two days ago.

AP - NASA couldn't have staged it any better: 10 people in orbit for Thursday's 10th anniversary of the world's most elaborate and expensive housing project, the international space station.

Reuters - A radar instrument aboard a NASA spacecraft has detected large glaciers hidden under rocky debris that may be the vestiges of ice sheets that blanketed parts of Mars in a past ice age, scientists said on Thursday.

AP - With the Bush administration on the verge of relaxing regulations protecting endangered species, Democratic leaders are looking at ways to overturn any last-minute rule changes.

AP - Bringing "Jurassic Park" one step closer to reality, scientists have deciphered much of the genetic code of the woolly mammoth, a feat they say could allow them to recreate the shaggy, prehistoric beast in as little as a decade or two.

Reuters - The global economy saw more signs of distress on Thursday with U.S. stocks plunging for a second consecutive day, oil prices falling, a surprise rate cut in Switzerland, export woes in Japan and rescue loans to Turkey and Iceland.