Study: Renewable energies’ potential untapped

The National Research Council on Monday published a report that finds that renewable energy sources–wind, solar, geothermal, wave, tidal, & biomass–could supply 10 percent of U.S. electricity supply in 2020 with existing technology. Today, renewable energies excluding hydro power are about 2.5 percent of the U.S. electricity mix. If you think the lack of technology [...]

Battery-free LED flashlight recharges in 90 seconds

Light for Life uses ultracapacitor technology. (Credit: 5.11 Tactical)    What’s special about it? Well, the flashlight uses three LEDs, but its key component is Flashpoint Power technology, an ultracapacitor energy storage technique from Ivus Energy Innovations. Last year, 5.11 Tactical, which makes clothes and gear aimed at law enforcement officers (but sells to civilians), [...]