What used to be considered waste is now seen as raw material for producing biogas, a viable energy alternative to nuclear and fossil fuels.
About 70,000 residents are in danger because of a dam that may burst due to recent hurricanes.
The U.S. territory's governor seeks a disaster declaration from President Trump as the extent of the devastation begins to hit home.
As rescue crews fan out across the island, tens of thousands of Puerto Ricans promise to slowly rebuild amid the country's economic crisis.
Rescuers focus on the rubble of collapsed buildings in Mexico City after Tuesday's magnitude 7.1 temblor, the country's deadliest in decades.
A new study says immediate reduction of fossil fuels combustion would help achieve the Paris agreement’s target of an increase of less than 2 degrees Celsius.
In the coming years, climate change will increasingly dominate the domestic national security agenda.
The storm, ravaging parts of the Caribbean still reeling from Hurricane Irma, is on track to hit Puerto Rico on Wednesday.
The government of the world's second-largest economy is now creating incentive programs for companies to develop electric cars.