The intricate design of female dolphin anatomy has been a puzzle to biologists who study reproduction. But new research shows how this design may allow females to control which males win the fertilization prize.
Governor Asa Hutchinson scheduled several executions of death row inmates before the state's supply of midazolam expires. But experts question whether the drug should ever have been part of lethal injections in the first place.
NASA scientists announced today that Enceladus, the sixth-largest moon of Saturn, has hydrothermal vents that are actively releasing hydrogen. Because such ecosystems are known to support life, the discovery confirms that Enceladus is a habitable environment.