Water efficiency is the smart use of resources through water-saving technologies and simple steps you can take around the house, according to the U.S. Environmental Protection Agency. Much of your indoor water use probably occurs in the bathroom.
At a Beijing supermarket, customers don't need a card to checkout. Instead, a camera scans their faces and matches it to a sales account. After entering a mobile phone number to charge the online account, the transaction is complete.
"Mason bees are the most prolific pollinators," says Robert Girvin, a Tacoma doctor who's been keeping mason bees for four years. "They're child-friendly, don't sting and are easy to manage. It's something easy you can do to improve the local envi