Thread: What are your favourite simple things that science just cannot explain?

Scientists have been able to slow the speed of light down by shining it through frozen argon gas at near absolute zero. First they slowed it down to 30 mph, then they were able to stop it. They will soon be able to slow it down somehow without any frozen argon gas (don't ask me how) and they will use it for computer technology to make our computers much much more efficient and fast.
But even if the speed of light is a constant, WHY? I haven't heard that science can explain that besides "just because".