“According to pioneering microbiologist Lynn Margulis, "fully 10 percent of our own dry body weight consists of bacteria, some of which, although they are not a congenital part of our bodies, we can't live without." In fact, a healthy human… — Marcia Bjornerud Copy Share Image
“According to pioneering microbiologist Lynn Margulis, "fully 10 percent of our own dry body weight consists of bacteria, some of which, although they are… — Marcia Bjornerud Copy Share Image
“With each integer on the Richter scale, there is a tenfold increase in the number of earthquakes that occur annually. On average, there is… — Marcia Bjornerud Copy Share Image
“The rate of rebound reflects how fast the mantle beneath the crust can flow back into place, and in places the rate is surprisingly… — Marcia Bjornerud Copy Share Image
“Finding outcrops is easy in arid and mountainous areas, where naked rock lies basking in the sun. But in humid and topographically subtle areas… — Marcia Bjornerud Copy Share Image
