This lesson focuses on the diffusion of gas molecules across the cuticle membrane of sea spider legs and the role body size plays in the ability of sea spiders to uptake gases. Students construct model sea spider legs of varying diameters and use them to investigate the relationship between surface area-to-volume ratios and diffusion.
Pilot program to let U.S. high-school students experience Antarctic science at a Chilean station
http://www.polartrec.com/expeditions/joint-antarctic-school-expedition-2014
Three high-school students and a teacher from Wisconsin will participate in a joint pilot program of the U.S. and Chilean Antarctic programs that will send them to a Chilean research station this February for hands-on experience with Antarctic environments and ecosystems research.
The U.S