“Watch-Out” Roundabouts: More Efficient Than Stop Lights


The safety and efficiency of roundabouts has been hotly contested in countries that have been wary to embrace them, such as the United States. People have argued that roundabouts are more confusing than signal lights, and consequently lead to more frequent accidents. While it is true that roundabouts can be confusing for first-time users, officials argue that once people have …

Top 5 Bike-Friendly Small Towns


Most lists of the top bike-friendly towns include major metropolitan areas, but small towns, those with a population under 100,000, actually pull in higher percentages of bike commuters. Small towns have the advantage of smaller road grids, easier commutes, and local government support. The most bike-friendly small towns are typically college towns where bicycling is considered by college students as …

The Best C-Size Rechargeable Batteries Of 2015


The best rechargeable C-size batteries are Acculoop C cells, by Accupower. These batteries are the new low self-discharge NiMH (Nickel Metal-Hydride) cells, and they have a high capacity of 4500 mAhs (milliamp hours).

Do Rechargeable Lithium-Ion AA Batteries Exist?


Do rechargeable lithium-ion batteries exist in standard sizes like AA, AAA, C or D? Yes, they are finally available. A company called Kentli has released AA and AAA rechargeable lithium polymer batteries that output 1.5 volts. Kentli batteries are available on Amazon here. Lithium-ion batteries normally operate 3.7V per cell — but Kentli put circuitry inside the cells to reduce the voltage …