Scientists want to use excrement from poultry as solid biomass fuel for heat and electricity.
Interior Secretary Ryan Zinke is under fire for restructuring his department and moving career officials to new, unrelated positions.
On World Kindness Day, one local group is making good use out of plastic bags.
In 1992, scientists warned that humans had to change or the Earth would become unlivable. What's changed 25 years later?
Syria announced at United Nations climate talks that it plans to join the agreement.
Republicans wanted to drill in an-oil rich area of an Alaskan refuge for decades, and the political stars are perfectly aligned for that to happen.
On a warmer planet, a volcanic eruption might disrupt global temperatures and precipitation for years after it happened.
Local media report Nicaragua gave documents to the United Nations that finalize its place in the climate pact.
The Netherlands opened a 3-D printed concrete bridge for cyclists that uses less concrete - and cement - than traditional methods.
Certain chemicals chewed a hole in Earth's ozone layer. But regulating those substances doesn't seem to have made much difference.
Research suggests harnessing ocean wind could power the entire globe - but it comes with some major obstacles.
Regime leader Kim Jong-un said President Donald Trump would "pay dearly" for saying the U.S. would "totally destroy" North Korea if needed.