Another use for biochar. The balloon described in the attached article is coated with biochar to absorb heat giving it additional lift. A dear friend was at the launch this morning.
He stated "
We launched this balloon today. Check out this site tracking and posting for the balloon. It should also have the press release mentioning The Biochar solar absorber. A great idea. The balloon was four lbs and was as tall as a four story building. It cost less then one hundred dollars, making this a great school project. If it does not open let me know."
Also see the attached photo
We know more about the stars overhead than the soil underfoot.
Leonardo Da Vinci