What is methylene blue? Methylene blue is a synthetic dye and medication used for a variety of purposes, including treating blood conditions, staining cells, and detecting pathogens. Considered ...

5 x 4 x 3.25 in. (12.7 x 10.2 x 8.3 cm.) ...

A simple blue stain could force trees into giving up their memories of cold summers and volcanic winters, a recent study reveals, giving researchers a new way to precisely reconstruct ancient climates ...