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."

C. M. Rubin’s Monthly Global Education Report
Innovation guru Clay Christensen has his eyes on Parenting. In a revealing interview with CMRubinWorld this month...

It’s called the economy of life-long learning - aka the digital age, aka the fourth industrial revolution. And we’re just at the beginning. Newer and newer technologies are creating accelerating changes impacting the way we live, work, produce and consume. Within the next decade, it is expected that more than a trillion sensors...

So search engine giant Google had this neat idea a few years ago to allow its engineers to spend 20% of their time working on things that really interested them – the goal being to inspire creativity and indirectly increase productivity. Some significant innovations came out of Google’s 20% time. Well-publicized “20% products”...

A good life is not one that is free from struggle, but one in which people have the tools to overcome what life throws at them. By that logic, a good parent is one who immerses his child in lots of small, authentic opportunities to navigate and conquer challenges.”
— Clay Christensen
Clayton...
Recently, I had the opportunity to learn about the British educational system from a visiting professor from Cambridge University. When the issue of standardized testing came up, she used a memorable analogy. She said schools spend too much time “weighing the pig, expecting it to grow.” The expression, which apparently originated from a story by a farmer to his son in the early 1900s, teaches that the activity of weighing or measuring does not produce results or improve performance—it simply...

“Perhaps the most distressing threat to student well-being is bullying, and it can have serious consequences for the victim, the bully and the bystanders.” — Andreas Schleicher
“When disenfranchised youth from the heart of our countries, who have ticked all the boxes of formal education, join the...

TREES! Interactive Notebook Activity by Gail Skroback Hennessey
Click here for a free downloadable version.
Arbor Day 2017 is...
First, I’m not theoretically against evaluating teachers or the idea of holding professionals accountable. Evaluation systems can provide teachers, new and experienced, with new perspectives and consistent feedback that helps them grow and perform at higher-levels. I have personally received feedback that dramatically changed my teaching practice. As a supervisor of undergraduates who are training to become teachers, I know the value that comes from being evaluated by others in the field....

“The divide between ‘refugees welcome’ and ‘refugees not welcome’ seems to be a global phenomenon in which refugees are viewed as outsiders and the public education system is understood as primarily serving national citizens.” — Elizabeth Buckner
In a new global study of ...

“I was exposed to even more sites than I was currently aware of. It was a great place to exchange ideas.”
— Linda Bean
A new era of personalized professional development is penetrating New York schools. Online learning methods that in the past enriched students are now...