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Earth's Core Hotter Than First Believed

coreUsing 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."

 

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Keep Breathing: An Update on A...

In an earlier blog, I wrote about a mindfulness-based program, where k-12 students learn and practice four breathing techniques in 40 days. I caught up with ABC Breathe director, Maria Andrade, to see how the initiative was going during the pandemic and a time when schools, teachers, and children are shifting between remote learning and in-person classes and having to maintain social distancing and other safety measures.   

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“The chance to author your own book is incredibly engaging and motivating to students.” – Dan Amos

The Planet Classroom Network is featuring Book Creator’s Create a...

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Leaders in a school have a huge impact on teachers, staff, faculty, families, students, and the community. They have the ability to teach, model, engage, collaborate, and communicate. Leaders and administrators wear many hats and have a lot of responsibilities that take courage, organizational skills, the ability to communicate, and the expertise to support, encourage and build others up. As I moved up from...

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As I begin teaching classes this semester, I feel it is more crucial than ever to create a safe space in the classroom, what I call a Container of Care & Courage.

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The Sound of Calm in the Classroom

The Tibetan Singing Bowl gives off a sound that is very hard to describe. However, it starts out loud but pleasant sound and then as the sound gets lower so does the stress from the day. When I hear the sound, my body starts to relax starting with my mind it’s not that it shuts down, but it focuses. My eyes are closed but once they open, they seem more focused. I can feel the tenseness in my fingers and toes release.

The above excerpt describes a graduate students’...

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Learn about the History of the...

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