Wireless optical transmission key to secure, safe and rapid indoor communications
| Wireless optical transmission key to secure, safe and rapid indoor communications Light is better than radio waves when it comes to some wireless communications, according to a group of engineers. Optical communications systems could provide faster, more secure communications with wider bandwidth and would be suitable for restricted areas like hospitals, aircraft and factories. |
| Solar Cell Efficiency Increased By Incorporating Ionic Salts Scientists in Spain are working on optimizing a type of photovoltaic cell (Grätzel cell) that artificially mimics photosynthesis. Grätzel cells are photovoltaic devices that take advantage of the interaction of a structured semiconductor less than a nanometer in size and an organic dye that acts as a solar collector. |
| Green Up Your Act: Part 3 7 More Tips to Reduce Your Carbon Footprint 1. Reduce–Buy less things, download music instead of buying the CD, choose products with less packaging, grow your own food, buy less things. 2. Re-Use–re-use old grocery bags, share your old clothes with a cousin, use old sauce jars for storing small items, visit freecycle.com–your junk may be your neighbor’s treasure. 3. Recycle–Paper, plastic, glass, food (compost your raw food scraps for healthier gardens or plants), buy items made from recycled items (I just got over a bad cold, during which time I went through 3 boxes of recycled paper tissues–and I. |
| Cars of the future could be powered by their bodywork, thanks to new battery technology Parts of a cars bodywork could one day double up as its battery, according to the scientists behind a new project in the UK. |
| Rethinking renewable energy strategy Researchers suggest that policy makers examine greenhouse gas emissions implications for energy infrastructure as fossil fuel sources must be rapidly replaced by windmills, solar panels and other sources of renewable energy. |