Land Art Generator Initiative click for larger imagedownload high resolution PDF Note in 2015: this post is from 2009. Some of the links below may be broken. The IEA has updated estimates since 2009, but the overall trends are the same. We hope that with the implementation of demand-side efficiency measures worldwide, long-range estimates will prove to be overestimated. According to the US Department of Energy (Energy Information Administration), the world consumption of energy in all of its forms (barrels of petroleum, cubic meters of natural gas, watts of hydro power, etc.) is projected to reach 678 quadrillion Btu (or 715 exajoules) by 2030 – a 44% increase over 2008 levels (levels for 1980 were 283 quadrillion Btu and we stand at around 500 quadrillion Btu today in 2009). I wonder what surface area would be required and what type of infrastructural investment would be required to supply that amount of power by using only solar panels. So to find this out we start with the big number 678,000,000,000,000,000 Btu.
The Neuroscience Behind Stress and Learning The realities of standardized tests and increasingly structured, if not synchronized, curriculum continue to build classroom stress levels. Neuroimaging research reveals the disturbances in the brain's learning circuits and neurotransmitters that accompany stressful learning environments. The neuroscientific research about learning has revealed the negative impact of stress and anxiety and the qualitative improvement of the brain circuitry involved in memory and executive function that accompanies positive motivation and engagement. The Proven Effects of Positive Motivation Thankfully, this information has led to the development of brain-compatible strategies to help students through the bleak terrain created by some of the current trends imposed by the Common Core State Standards and similar mandates. In the past two decades, neuroimaging and brain-mapping research have provided objective support to the student-centered educational model. Neuroimaging and EEG Studies
Electricity for kids - and everyone else: A simple introduction! Advertisement by Chris Woodford. Last updated: April 14, 2016. If you've ever sat watching a thunderstorm, with mighty lightning bolts darting down from the sky, you'll have some idea of the power of electricity. A bolt of lightning is a sudden, massive surge of electricity between the sky and the ground beneath. The energy in a single lightning bolt is enough to light 100 powerful lamps for a whole day or to make a couple of hundred thousand slices of toast! Electricity is the most versatile energy source that we have; it is also one of the newest: homes and businesses have been using it for not much more than a hundred years. What is electricity? Electricity is a type of energy that can build up in one place or flow from one place to another. Static electricity Static electricity often happens when you rub things together. Have you ever walked across a nylon rug or carpet and felt a slight tingling sensation? Lightning is also caused by static electricity. How static electricity works