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."
I recall when teaching an undergraduate course, asking the pre-service teachers in the class to narrow down a chapter on student engagement and management to a single word. Not an easy task, but the group managed to list a series of words that encapsulated the concepts that would make teaching meaningful. Nowhere on the list were terms like assessment, targeted instruction, or remediation. Instead, the list looked this this: Love, Caring, Passion, Connection, Creativity, and Compassion. It...

Poverty, Social Justice, Jobsolesence, and how to get thinking back in classrooms were the themes that intrigued us this month.
Our Global Teacher Bloggers are pioneers and innovators in fields such as technology...

“The ability to learn deeply is perhaps the best legacy we can leave to our younger generations, so that they have a fighting chance to survive, save humanity, and sustain life in the planet.” — Santiago Rincon-Gallardo
Globalization has increased our interconnectedness and interdependence...

Ending poverty is our choice. All we need is fortitude; the will to say this will not happen in my community on my watch.
The world is making some progress to end extreme poverty but there is still so much more that needs to be done. One of the most stunning statistics you will find on this global epidemic...
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...

Click here for free downloadable version.
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-...