Bioscientists are working on safer, easier bone transplants. A human trial is scheduled for 2020. This post also has a video about calcium and, believe it not, beautiful caves .
I love this professor’s ‘do. I also remember walking the White Cliffs of Dover back in 1973 – so beautiful! There’s a lot to
Note: A version of this article appeared on Helium, June 15, 2011. Limestone is a calcium-based rock that has many uses in daily life.