There's no question about it, McDonald's is the most successful restaurant in the history of the world. The company isn't worth millions, but billions, nearly $150 billion, and that number keeps ...

This is a microscope image of the worm species C. elegans. Certain neurons involved in dopamine signaling are shown in red, while certain other neurons, including those involved in sensing smell ...

There are about 34,000 different types of worm; many are so small you wouldn't be able to see them without a microscope! Worms are hermaphrodite, which means they have both male and female ...