A scene from the 1990 comedy film 'Kindergarten Cop' where Arnold Schwarzenegger's character punches a pig.

A simulated spacecraft navigates the intense gravitational forces surrounding a black hole, showcasing the warping of space-time.

习惯可以改变一个人，好的习惯让我们变得更好，坏的习惯让我们不由自主。如何养成好的习惯，改变自己？

Explore how robots are being integrated into classrooms to enhance STEM education and promote interactive learning experiences for students.

Discover the basics of hydroponics in this 1-day training course, covering soilless growing methods, system design, and plant care.

A demonstration of a USB pen drive being physically broken in half by hand, highlighting its fragility.

Learn how to safely and effectively fire a gun without revealing your position or identity.