The rover brought along the Ingenuity helicopter, the first to fly on another planet. Smoke simulation by Joel Adams. This ...

Mayonnaise is at the top of the no-freeze list. But if you're reading this, you're probably one of the unlucky people who just found that out the hard way.

Related: The Massive Dollar Store in Florida Where You’ll Find Rare Treasures at Rock-Bottom Prices A good rule of thumb: if an item has a price tag, the vendor might be willing to negotiate a bit, ...