Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. During a field trip to the ...

Wyoming is home to massive natural formations, as any visitor to the Grand Teton National Park can attest, but those formations also hide secrets. Beneath layers of ancient ash, evidence of two ...

Scientists in China have used ground heat exchangers based on volcanic tuff stones to improve storage capabilities and efficiency of photovoltaic-thermal systems. Their experiments showed that the ...