Via Eva, something pretty to watch this morning:
"A study published earlier this year by Harvard scientists discovered that an animal’s speed increases with body size, but only to a certain point. A gazelle is faster than a mouse, but also faster than an elephant. By studying a certain species of lizard that can vary quite greatly in size, these researchers realized that speed and the length of the gait increase with size until the weight of the animal forces the limbs to adjust their motion to support mass in order to not fall over. You can read about that study here."