Just like everyone else, you learned about how a caterpillar turns into a butterfly (or moth) inside a chrysalis (or cocoon) and you desperately tried to envision what happens inside and what it looks like. Scientists who’ve opened a lot of chrysalises will tell you the caterpillar turns to goop and then a butterfly, but that’s not completely accurate, and the process of opening one destroys the structure anyway. But now, two teams of scientists have started to captured intimate series of images showing the same caterpillars metamorphosing inside their pupae. Both teams used a technique called micro-CT, in which X-rays capture cross-sections of an object that can be combined into a three-dimensional virtual model. By dissecting these models rather than the actual insects, the teams could see the structures of specific organs, like the guts or breathing tubes. They could also watch the organs change over time by repeatedly scanning the same chrysalis over many days. And since insects tolerate high doses of radiation, this procedure doesn’t seem to harm them, much less kill them. Ed Yong explains more about this technology, and you’ll more pictures of an insect going through the metamorphosis at Not Exactly Rocket Science. Link (Image credit: Lowe et al. 2013. Interface)
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See Inside a Butterfly Chrysalis
Georgia Tech and Udacity — the online courseware project led by Sebastian Thrun — have announced a plan to offer an accredited M.S. Computer Science program online. The two organizations are also working with AT&T. This is the first time a major university has made an actual degree available solely through the MOOC format. Getting a degree in this manner is going to be much cheaper than a traditional degree: “… students also will pay a fraction of the cost of traditional on-campus master’s programs; total tuition for the program is initially expected to be below $7,000.” U.S. Secretary of Education Arne Duncan said, “Massive open online courses (MOOCs) have quickly become one of the most significant catalysts of innovation in higher education. As parents know all too well, America urgently needs new ideas about how to make higher education accessible and affordable. This new collaboration between Georgia Tech, AT&T and Udacity, and the application of the MOOC concept to advanced-degree programs, will further the national debate — pushing from conversations about technology to new models of instruction and new linkages between higher education and employers.” Georgia Tech is looking at the big picture: “At present, around 160,000 master’s degrees are bestowed in the United States every year in computer science and related subject disciplines; the worldwide market is almost certainly much larger, perhaps even an order of magnitude larger.” Read more of this story at Slashdot. 
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