Silver Teal
The Silver Teal (Spatula versicolor), also known as the Versicolor Teal, is a small dabbling duck widespread in South America. It is most often seen on freshwater lakes, lagoons and marshes, where it feeds in shallow water along vegetated edges. The species is recognizable by its dark cap-like head...
How Do Geckos Stick to Walls?
Geckos stick to walls using millions of microscopic hair-like structures called setae on specialized toe pads. Each seta branches into much smaller flattened tips called spatulae. When these tips make close contact with a surface, weak intermolecular attractions known as van der Waals forces combine...