NASA rocket launch: The Delta 2 rocket blasted off from California early Wednesday morning and released the Orbiting Carbon Observatory-2 satellite in low-Earth orbit 56 minutes later, bringing relief to mission officials who lost a similar spacecraft five years ago.
Hurricane Arthur is actually still a tropical storm. But Arthur is forecast to reach hurricane strength Thursday and move north off the East Coast. Will Arthur force Boston to cancel or postpone its fireworks?
The emperor penguin, the world's largest penguin, faces a dramatic population decline over the next 85 years, researchers say. Shrinking Antarctic ice sheets threaten the habitat and food sources of the emperor penguin.
The ability to generate a powerful electric field evolved independently in six species of fish not closely related to each other. New research unravels the genetic pathways of how this strange organ came to be.