Tropical orchids are very familiar ... even at our own windowsill. They also grow outside wildly in your area even in the cooler zones of the earth. There exist more species than you'd think, but you might barely find any.

Butterflies are symbolic for positive emotions of people. Unfortunately many species of butterflies are vulnerable for changes in their environment.

The best way to experience spatial structures (like polyhedra) is in a 3D-animation.

Would you like to play go with your friends but you don't have a go board? Here you can play at a digital go board.

We all know the rythm of seven days in a week ... in music it sounds like this