Windspire: Propeller-Free Household Turbine Gets Approval


We just featured the largest wind turbine in the world, now here’s something at the opposite end of the spectrum: a household wind turbine. In the last few years, we’ve seen a lot of mini-wind turbines that haven’t turned out to be very useful. But the Windspire turbine from Mariah Power sounds interesting. The Windspire has a propeller-free vertical-axis design, …

The Best Shower Filter

Note: Please stop read this article, and read our updated shower filter article instead I wanted to post an update on my quest for the best shower filter. I received a lot of useful comments on my last shower filter post, and I’ve also tested a couple of new shower filters.

The Best Rechargeable Batteries and Chargers Of 2015


In A Nutshell Here are my recommendations for the best rechargeable AA batteries: If you want the best energy capacity (2550 mAh) — get the Eneloop Pro If you want maximum recharge capacity (2100 times) — get the 4th Generation Panasonic Eneloops If you want to save some money and don’t mind a little less performance from your batteries —  …

The Best Water Filters Of 2010

There are a lot of misleading claims about water filters. Many filters are marketed with general statements like “improves taste and odor”. But filter manufacturers don’t mention the specific amount of pesticides or chloramines removed, for example.