The red planet's hot again, cold again history: Explaining persistent hydrogen in Mars' atmosphere
The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...
What Really Happens If You Eat Eggs Past Their Sell-By Date?
The rule is: If the eggs smell fine, it’s probably OK to eat them. “As long as the eggs are stored in the fridge, eggs shouldn’t spoil,” said Shelley Balls, a registered dietitian nutritionist for ...