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."
The call to expand learning time to ensure that American students remain competitive with their international peers has become quite popular. While the rationale is perhaps a bit misguided (some evidence suggests that our students already experience as much instructional time as their peers~ and...
I'd like to know who coined the saying~"Sticks and stones may break your bones~ but names can never hurt you."? I've never found this to be true. Words are very powerful and negative words can hurt...a lot! I have found some helpful resources which teachers might wish to review on the topic of bullying. Go to my website to see the list of resources(stories~ links~ video clips~etc.) I have compiled. http://gailhennessey.com...
My daughter~ a fourth-grade student~ excels academically. She works hard in school and earns straight As. And while I wont go as far as to slap a My Daughter is an Honor Roll student sticker on my car bumper~ I am very proud of her.
The problem is that her academic performance is no guarantee that she will be successful in the real world~ at least not as many define success. Her strong study habits~ ability to read at higher levels~ or good penmanship does not necessarily mean...
The release of Apple's latest mobile operating system is leaving owners of older devices behind, but a Cupertino policy for these devices means that they will not be rendered "obsolete."
iOS 7 is a huge departure from the previous verisons of the operating system. As such, only the most recent devices posess the hardware to utilize it. That means...

Need a short activity for your students: In the News...
NASA has announced that the first man-made object has left the solar system! The Voyager 1 launched in 1977(along with the Voyager 2 sixteen days later) has left heliosphere and is now zooming into interstellar space. The heliosphere is the boundary separating our solar system including the sun~...
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Perhaps, this might be of interest for a Bell Ringing Activity:
I n a world where beauty is highlighted, a unique organization wants people to think about creatures less cute. The Ugly Animal Preservation Society, located in Great Britain,has just selected a new mascot-the Blobfish, as the world's ugliest creature! Found in the deep ocean waters off of south-eastern Australia, the Blobfish is really a creature only a mom(or dad)could love! A world wide competition was recently held with...