In Texas, a strange rule is causing trouble for professors. They can't teach certain ideas unless they get special permission. This rule is making it hard to discuss important topics like Plato's works. Some people think this is a bad idea because it limits what students can learn. It's like saying
A long time ago, in the Western Han dynasty, a clever machine was made to weave silk. This machine, called ti hua ji, could make fancy patterns. It was found by accident in 2012. People think it might be the world's first computer. This machine is like a computer because it can follow instructions.
Imagine a world where the cold is as constant as the stars above. In this world, our ancient relatives, the Neanderthals, had to adapt to survive. One key question scientists are asking is: Did Neanderthals wear clothes? The answer seems to be yes, but how do we know? Scientists have found tool
