significant concentrations of sulfur dioxide in a planet's atmosphere can suggest that the planet is likely uninhabitable, allowing researchers to eliminate it from further consideration.

WASHINGTON— Three public health and conservation groups sued the Environmental Protection Agency today for failing to ensure that parts of Maryland and Michigan have effective plans for cleaning up ...

Astronomers have identified sulfur as a potentially crucial indicator in narrowing the search for life on other planets. While sulfur itself is not necessarily an indication of habitability, ...