Recent Posts

warhol while you wait

I’ll have photos and videos from Grassroots Mapping up soon, Special thanks to Dustin Zemel for documenting.

Today went great

Thanks Sabrina Lindsey & Molly for bringing food, Dustin & Jane for documenting, Robby, Anna, Wade, Tuuli, Joel, Samantha, Dennis, & Scott for ma...

Thank You Lippman Co.

**Lippman Co. party supplies **gave me a business discount and two free days of tank rental on helium, thanks!

Solar Blimp to Cross English Channel

While I’m preparing for a workshop where we’ll build some solar hot-air balloons, a very different solar aerostat, running of photovoltaics, is set to cross ...

Helium Dispersion Through HDPE

In conversations on the Grassroots Mapping google group we’ve been wondering how long a homemade Polyethylene helium balloon could stay aloft.  At what rate ...