As they shop, Costco members will open the app and scan each item's barcode when they put it in their cart. When they're finished, they will be able to pay within the app to get a tamper-proof QR code ...

Test yourself. Even if you make a mistake, Ranganath said trial and error is one of the best ways to remember something. "If ...

An open collection of tips and tools could help researchers and publishers to pick up on problematic research.