Down a microscope, a lichen looks like a loaf of ciabatta: it has a stiff, dense crust surrounding a spongy, loose interior.

Wonderful story of curiosity and a willingness to follow the evidence.

Two ways to respond: webmentions and comments

Webmentions

Webmentions allow conversations across the web, based on a web standard. They are a powerful building block for the decentralized social web.

“Ordinary” comments

These are not webmentions, but ordinary old-fashioned comments left by using the form below.

Reactions from around the web