Scientists have identified an aggression-promoting pheromone, along with the neuron that detects it.

  The northern white rhino is the most endangered "mega-vertebrate" on Earth.

  Known by its acronym REDD, the program would have paid poor nations to protect their own forests.

  While still a fossil fuel, natural gas emits half as much carbon to generate electricity than coal.

  The world's largest atom smasher will be ready in February.

  Scientists have for the first time tracked how cells move in three dimensions.

  Current treaty negotiations do not specifically address the effects of carbon absorption on marine life

  Events in underground experiment too few for certainty, but match signature of dark matter particles.

  Recent surveys suggest that Americans are not exactly consumed by concern over climate change.

  Scientists were able to witness the eruption of a deep-sea volcano with the aid of a submersible robot.

  Many areas in East Africa have received less than 5 percent of normal rainfall.

  Israeli firms are expanding into fields such as desalination and sewage-eating bacteria technology.

  With some extra funds, NASA could place a carbon monitoring observatory into Earth orbit.

  NASA images show iceberg B17-B adrift off the Southwestern coast of Australia.