This week, a mysterious hitch in Tess's step has us thinking of a rough time from long ago.

This week, Tess goes somewhere she hasn't been in many years, a place we've avoided for a very good reason.

This week, I called, you answered. An update on Project Centauri, our effort to get 100 new families on Matrix.

This week, we're delighted as Tess expands her video library into uncharted territory.

This week, it's an earth metal, a chemical element, a thing you can use when making fireworks. And hey, maybe we should drink it.

This week, we know what we need in order to get to a cure or treatment for Hao-Fountain syndrome. And you can help.

This week, a couple fun updates about Tess's re-entry after her seizure.

This week, Tess has had a life-threatening event, at a time when we're very far from the closest medical facility. Part 5 of 5.

This week, Tess has had a life-threatening event, at a time when we're very far from the closest medical facility. Part 4 of 5.

This week, Tess has had a life-threatening event, at a time when we're very far from the closest medical facility. Part 3 of 5.

This week, we're away on a ski vacation as a family. Let's check in with Tess.