A handful of OGN's most popular stories from last week.
World's Largest Crystal Cave: In an abandoned silver mine in Pulpí, in Spain's south-eastern Almería Province, lies the world's largest geode – a natural crystal phenomenon that has stunned scientists.
Three Simple Habits to Reduce the Risk of a Stroke: 80 percent of strokes are preventable, so lifestyle choices that reduce blood pressure and cholesterol levels can go a long way in reducing your risk.
What's The Most Nutritious Plant-Based Milk? Scientists at the US Food and Drink Administration now have the answer.