How aerogel is made and why it's so cool
by Mark Frauenfelder from on (#4GE5N)
Veritasium visited Dr. Stephen Steiner at Aerogel Technologies in Massachusetts to learn about the wonders of silica aerogel, a solid that is only twice as dense as air. My sister gave me a small chunk of aerogel about 10 years ago and it's one of my favorite possessions.