How much energy can you store in a rubber band? Obviously, the answer depends on the size of the rubber band.

Researchers at Chalmers University of Technology have shown that between 87 and 98 percent of ships comply with the tougher regulations for sulphur emissions that were introduced in northern Europe in 2015. The lowest levels of compliance were observed in the western part of the English Channel and in the middle of the Baltic Sea.

Analysis indicates decades of oil production activity have destabilized localities in an area of about 4,000 square miles populated by small towns, roadways and a vast network of oil and gas pipelines and storage tanks

On a rainy day in New Orleans, people file into a beige one-story building on Jefferson Davis Parkway to sign up for the Low-Income Heating and Energy Assistance Program (LIHEAP), a federal grant that helps people keep up with their utility bills. New Orleans has one of the highest energy burdens in the country, meaning that people must dedicate a large portion of their income to their monthly energy bills. This is due in part to it being one of the least energy-efficient cities in the country.

India and France have committed more than US$2 billion to fund solar-energy projects in developing countries. Renewable-energy analysts say that the money has the potential to dramatically expand solar technology in these nations, but others argue that governments should instead focus on removing barriers that slow the growth of renewable energy.

One of the key ways to combat global climate change is to boost the world’s use of renewable energy. But even green energy has its environmental costs. A new approach describes just how hydropower measures up when it comes to land use effects.

Geothermal energy might be the most appealing of all renewables. Unlike wind, solar, or even wave or tidal energy, it produces constant and reliable long-term power. Iceland has got this all figured out, but they have it easy. The entire country is (luckily) perched on top of an active volcano. For the rest of us, tapping into geothermal power is harder, because you have to dig for it: About 5 kilometers down, you can find rock hot enough to turn water into steam.

Farm manure could be a viable source of renewable energy to help reduce greenhouse gas emissions that cause global warming.

After lying hidden in sediments for thousands of years, delicate frozen gas structures are in the spotlight for both scientific research and the national interest. These structures, known as gas hydrate, are being investigated by scientists the world over for their possible contributions to the global energy mix, as well as their potential interaction with the environment.

A variety of models predict the role renewables will play in 2050, but some may be over-optimistic, and should be used with caution, say researchers.