According to Contact Lens Spectrum, biweekly and daily lenses actually produce a similar amount of waste. This is largely due to the reusable cases and solution bottles needed for biweekly lenses.

When cleaning your drip filter coffee maker with vinegar, do not ever immerse the main housing unit in water or other liquids ...

A team of researchers from TU Wein has developed a self-learning robot to complete simple tasks like cleaning washbasins.