A clear science explanation breaks down how lightning forms and why it branches through the air instead of traveling in a straight line to the ground. Real-life Haribo! Ultra-rare two-headed snake ...

An AI model that learns without human input—by posing interesting queries for itself—might point the way to superintelligence. Save this story Save this story Even the smartest artificial intelligence ...

The ice in a domestic freezer is remarkably different from the single crystals that form in snow clouds, or even those formed on a frozen pond. As temperatures drop, ice crystals can grow in a variety ...