Microchip equipment maker Applied Materials posted a drop in its fiscal second quarter revenue and profit in the face of a slump dogging the industry.

The EFuel100 MicroFueler is the world's first portable ethanol microrefinery system — both a pump station and an ethanol distiller reduced to an appliance-sized unit, allowing users to create usable fuel for most cars with a simple mix of sugar, water and yeast.

Two  California entrepreneurs are launching a new technology that will enable people to create ethanol in their homes.

Mom-and-pop service stations are running into a problem as gasoline marches toward $4 a gallon: Thousands of old-fashioned pumps can't register more than $3.99 on their spinning mechanical dials.

Even as the presidential candidates debate whether to cut federal gas taxes this summer, a harder-to-control factor is emerging as a main reason behind the increase in energy costs: the sinking greenback.

When Rene Obermann took over Deutsche Telekom at the end of 2006 he was tasked with the firm's struggling domestic operations. But his non-domestic challenges have been—and continue to be—plentiful.

As the Dow, Nasdaq and S&P slide into negative territory, CNBC asked the experts how to bolster your investments.

U.S. natural gas inventories could be at seriously low levels at the start of winter this year, if current rates of liquefied natural gas (LNG) imports remain at record lows, a Goldman Sachs report said Wednesday.

Russia and the United States signed on Tuesday a long awaited civilian nuclear cooperation pact that will allow firms from the world's two biggest atomic powers to expand bilateral nuclear trade.

U.S. chemical maker DuPont  said Tuesday it plans to open a research and development center and a manufacturing facility in China, which will cater to the growing demands of the solar energy industry.

Indonesia is considering quitting the Organisation of Petroleum Exporting Countries (OPEC) as the country's crude oil output had declined, the country's President Susilo Bambang Yudhoyono said on Tuesday.

Iran said on Monday it would not consider any incentives offered by world powers that violated its right to nuclear technology, ruling out a precondition that it suspend uranium enrichment.

Small and/or beat-up were the main themes running through Tuesday's stock chatter on CNBC. But don't forget energy and more energy -- and one aerospace giant.

The ethanol industry, once highly touted as a home-grown, alternative energy source, is struggling to retain its diminishing luster.

Millions of Americans are behind on electric and gas bills, and a record number of families could face energy shut-offs over the next two months, according to state energy officials and utilities around the country.