Rolling Hypocycloids - The hypocycloid with n cusps is the curve traced out by a point on a circle rolling inside a circle whose radius is n times larger. The hypocycloid with 2 ...
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Once, Gretchen Daily only had eyes for the rain forest.Read the rest of the article here.
Eighteen years ago, as a young scientist on the rise, Daily arrived at a renowned research station in the hills of Costa Rica armed with nearly 100 shellacked plywood platforms. As a student at Stanford University, studying under the famed biologist Paul Ehrlich, she had seen how large birds, defying expectations, seemed to thrive on small bits of forest spackled in the area's coffee plantations, when theory predicted their demise. On her return, she planned to spread her feeding platforms in staggered densities to test that observation; local kids promised to monitor the mesitas.
But when the morning came, so did the bees.
Quick, how many trips to the landfill does Penn State’s recycling program save each year? If I double the thickness of my loft insulation, how much energy will I save? How much might the melting of the polar ice caps amplify the effect of global warming?You can read the rest here.
After a semester in Professor John Roe’s Mathematics of Sustainability course, his students will know how to figure out the answers to these questions. Roe, and undergraduate research assistant Kaley Weinstein, are preparing a series of sustainability-related problems for a new general education course in mathematics. Their target audience: the student who is not going into science, mathematics or engineering.