A study by researchers at the University of Pennsylvania found composting and feeding food waste to animals would cut carbon ...

Delaware legislators approved bills on offshore wind, creating an Inspector General Office and limiting agreements with federal immigration authorities.

The heatwave that brought 100-degree temperatures to the Philadelphia region in June also brought warnings that the air quality was unhealthy for sensitive groups. This was not a coincidence.

Penn engineering researchers modified a fungus called Aspergillus flavus, which may have caused lung disease and illness in ...