Elementary geometry

The Hoberman Sphere

Environment

Artist and engineer Chuck Hoberman talks about what led him to his famous invention, which will soon be put into orbit around the Earth.

The World

Geo answer

Arts, Culture & Media
Donate today to kickstart The World’s fundraising drive!

Donate today to help us raise $25,000 by June 30 and help sustain our international reporting. All donations will be matched 2:1!

Donate today to kickstart The World’s fundraising drive!

Donate today to help us raise $25,000 by June 30 and help sustain our international reporting. All donations will be matched 2:1!