Our perception of how large or small things are in the world is systematically influenced for how we perceive distance or depth. This is most famously shown by the Ponzo Illusion (discovered by Mario ...

People have long noted that a full moon seems to shrink and expand in size depending on its heavenly position. A moon looks larger near the horizon than perched high in the sky, although its distance ...

Cuttlefish use multiple camouflage tactics to evade their predators. Two common tactics are background matching (resembling the background to hinder detection) and masquerade (resembling an ...

Researchers at the Martinos Center for Biomedical Imaging (www.nmr.mgh.harvard.edu/) at Massachusetts General Hospital have identified a portion of the brain ...