An unidentified substance has killed or injured hundreds of birds so far.
What does it mean to be blue? The wings of a Morpho butterfly are some of the most brilliant structures in nature, and yet they contain no blue pigment -- they harness the physics of light at the nanoscale.
New research shows that market squid may have something to offer the engineering sector: skin cells that can switch between transparent and white. Humans could use these cells to develop new bio-inspired materials; squid probably use them for cross-dressing.