3 ms·NASA Retrofitted U2 Spy Plane Reveals Tropical Lightning Storms Are Radioactive1 points by teleforce 2y agognabgib 2y agoDiscussion (161 points, 4 days ago, 118 comments) https://news.ycombinator.com/item?id=41726698 https://news.ycombinator.com/item?id=41726698