Featured in theo
Meet PopSci's resident mad scientist Theodore Gray, master of concoctions and combustions
An Elemental Fascination
Our interactive periodic table showcases 93 element samples from the collection of PopSci contributing editor Theodore Gray, who spent four years assembling and photographing them.
Titanium in Technicolor
With a battery and a can of soda, you can anodize the surface of titanium to create colors that will last forever