In a rebroadcast from May 23, 2010, Keith and guest host Tom Gill of the UTEP Geological Sciences Department interview Franco Marcantonio from the Texas A&M Department of Geology and Geophysics about dust. Helium from our solar wind gets implanted in dust particles from outer space...up to 40,000 tones every year! The dust that accumulates in ocean sediment conserves the helium isotope and can help determine the earth's early climate.
Aired June 22, 2014.