Guest blogger - Linda Orozco
Scott McLeod, J.D., Ph.D., is an Associate Professor of Educational Leadership at the University of Kentucky. He also is the Founding Director of the UCEA Center for the Advanced Study of Technology Leadership in Education (CASTLE), the nation’s only academic center dedicated to the technology needs of school administrators, and was a co-creator of the wildly popular video series, Did You Know? (Shift Happens). He has received numerous national awards for his technology leadership work, including recognitions from the cable industry, Phi Delta Kappa, and the National School Boards Association. In Spring 2011 he was a Visiting Canterbury Fellow at the University of Canterbury in New Zealand. Dr. McLeod blogs regularly about technology leadership issues at Dangerously Irrelevant and Mind Dump, and occasionally at The Huffington Post. He can be reached at scottmcleod.net.
I'm pleased to announce that Dr. Linda Orozco, Professor of Educational Leadership at California State University - Fullerton, will be my guest blogger next week. Linda is
interested in technology leadership, diversity, legal, and
other K-12 school administration issues and has graciously agreed to
join us for a few days from her educational leadership program in Thailand. We're looking forward to your posts, Linda!
Here's the science of black holes, from supermassive monsters to ones the size of ping-pong balls.
- There's more than one way to make a black hole, says NASA's Michelle Thaller. They're not always formed from dead stars. For example, there are teeny tiny black holes all around us, the result of high-energy cosmic rays slamming into our atmosphere with enough force to cram matter together so densely that no light can escape.
- CERN is trying to create artificial black holes right now, but don't worry, it's not dangerous. Scientists there are attempting to smash two particles together with such intensity that it creates a black hole that would live for just a millionth of a second.
- Thaller uses a brilliant analogy involving a rubber sheet, a marble, and an elephant to explain why different black holes have varying densities. Watch and learn!
- Bonus fact: If the Earth became a black hole, it would be crushed to the size of a ping-pong ball.
Military recruits are supposed to be assessed to see whether they're fit for service. What happens when they're not?
- During the Vietnam War, Robert McNamara began a program called Project 100,000.
- The program brought over 300,000 men to Vietnam who failed to meet minimum criteria for military service, both physically and mentally.
- Project 100,000 recruits were killed in disproportionate numbers and fared worse after their military service than their civilian peers, making the program one of the biggest—and possibly cruelest—mistakes of the Vietnam War.
In a breakthrough for nuclear fusion research, scientists at China's Experimental Advanced Superconducting Tokamak (EAST) reactor have produced temperatures necessary for nuclear fusion on Earth.
- The EAST reactor was able to heat hydrogen to temperatures exceeding 100 million degrees Celsius.
- Nuclear fusion could someday provide the planet with a virtually limitless supply of clean energy.
- Still, scientists have many other obstacles to pass before fusion technology becomes a viable energy source.
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