Breweries in the EU throw out around 3.4 million tons of unspent grain every year, weighing the equivalent of 500,000 elephants

Switch to natural gas would save 12,000 billion gallons a year by 2030; switching to solar or wind power would yield even greater savings

Carbon-neutral re-use of CO₂ has emerged as an alternative to burying the greenhouse gas underground

While solar cells are an efficient source of renewable energy during the day, there is currently no similar renewable approach to generating power at night