Sea lamprey up in Lake Superior

The number of sea lamprey has nearly doubled in western Lake Superior in the past year, according to Minnesota and U.S. wildlife officials.

Ivory-billed woodpecker sighting real

Cornell University's Ornithology program researchers in New York offered evidence that the sighting of an ivory-billed woodpecker was legitimate.

ESA to discuss Mars mission

The European Space Agency wants to send a single robot rover to Mars along with another fixed station.

Tsunami created swells worldwide

Last year's Indian Ocean tsunami was so powerful it circled the globe twice and high waves were recorded in Halifax, Nova Scotia, and Peru, an analysis shows.