Male jaguars are crossing into the United States from Mexico and their presence has set off repercussions on both sides of the border.

Fossil 'treasure trove' discovered Aljazeera.net - Scientists have stumbled upon the fossils of dozens of giant marine reptiles while investigating a 150 million-year-old dinosaur graveyard on an Arctic island off Norway.

Hubble observations confirm planet birth theory People's Daily Online - The Hubble Space Telescope has provided definitive evidence for a long-predicted theory that planets form from debris disks around stars, astronomers said on Monday.