Using a series of very technical tests, scientists from the French research facility CEA have determined that the Earth's core is roughly 6,000 degrees Celsius. That is approximately 1,000 degrees hotter than the temperature obtained by tests in the 1990s.
These new figures show that the center of the Earth is just as hot as the surface of the sun.
The experiment that supplied the new temperature used X-rays to probe tiny samples of iron at extraordinary pressures to examine how the iron crystals form and melt. The BBC reported that "To replicate the enormous pressures at the core boundary - more than a million times the pressure at sea level - they used a device called a diamond anvil cell - essentially a tiny sample held between the points of two precision-machined synthetic diamonds.
Once the team's iron samples were subjected to the high pressures and high temperatures using a laser, the scientists used X-ray beams to carry out "diffraction" - bouncing X-rays off of the nuclei of the iron atoms and watching how the pattern changed as the iron changed from solid to liquid."
Which of the following scenarios do you prefer? During the first, the teacher is observed in his classroom for about 45 minutes. The evaluator takes notes then quietly leaves. Days later, the teacher and evaluator conference, and the evaluator provides feedback. She highlights how the teacher was “accomplished” in certain teaching categories and how he was “progressing” in two areas. The evaluator suggests a few resources and ideas to help the teacher improve in those areas. The teacher...

“The fact that we even have to make the argument that thinking should be the most important aspect of school culture proves that we have gotten very far away from teaching young people how to become successful adults.” — Rachel Ferro
RE:THINKING is a thought-provoking new documentary film about...

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Perhaps, you will find this helpful to use on the International Day of Peace.
The International Day of Peace is held every year on...

“I think the guiding principle for government should be to protect and enable/retrain the worker, not protect the job. Policymakers and educators should focus on making sure that workers are as equipped as possible to transition to new opportunities…” — Peter Robinson
A recent OECD report...

C. M. Rubin’s Monthly Global Education Report
If the world’s teachers were calling the shots on content in curriculum, what would they change? This month our world-...

What can Millennials teach everyone else about happiness?
The Happify study concluded that some Millennials place far too much emphasis on work as the key to their happiness.
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Employers complain that graduates are not ready for work. Stanford University studies indicate students are overloaded and underprepared. So exactly what should we teach young people in an age where Dr. Google has an answer for everything? Humans are living longer; the traditional professions disappear while new ones are created;...
As a teacher, have you ever felt like you were running in circles? Like you were working as hard as possible but then not getting the results, whether in the form of student engagement, test scores, and/or learning gains. It might be time to reconsider your approach to work and time.
The Pareto Principle, named after economist Vilfredo Pareto, states that there is an inverse relationship to input and output. In simplest terms, about 80 percent of the results come from 20 percent of...