Feature

Early Kin of Vertebrates Found in China

Soggy Toast? Read On

Optical Confusion

The Y Copies Another Chromosome’s Gene

Tying Knots to Tubular Geometry, DNA Loops

Digging into Natural-World Insights

Speedy Galactic Aluminum Vexes Astronomers

Undesirable Sex Partners

Overpowered Plants

Distant Galaxies Dazzle in the Infrared

Front Matter

Light Gets the Bends in a Photonic Crystal