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If you are going to spend time on science, though, please be wary of glib explanations that will confound a child's true understanding just a few years down the line. Language matters far more than facile explanations of the natural world. Unless you know what energy is, and I got to tell you that I do not, do not pretend a 7 year old can master this. Unless you can explain a concept accurately without using science jargon, do not pretend your lambs will get it. My students are amazed water comes out of flame, something easily demonstrated at any level of public education, yet accept that the Earth is round at face value, because you, the most powerful person in this child's life outside of family (and sadly occasionally including family), said so.

Struggling to understand a Biological Concept? Watch our growing library of Biology videos and you will see how easy it is to take a concept and make it fun. People all over the world have been using these videos to make their C's into A's. Check them out, and have fun learning.

Science is an inherent contradiction — systematic wonder — applied to the natural world. In its mundane form, the methodical instinct prevails and the result, an orderly procession of papers, advances the perimeter of knowledge, step by laborious step. Great scientific minds partake of that daily discipline and can also suspend it, yielding to the sheer love of allowing the mental engine to spin free. And then Einstein imagines himself riding a light beam, Kekule formulates the structure of benzene in a dream, and Fleming’s eye travels past the annoying mold on his glassware to the clear ring surrounding it — a lucid halo in a dish otherwise opaque with bacteria — and penicillin is born. Who knows how many scientific revolutions have been missed because their potential inaugurators disregarded the whimsical, the incidental, the inconvenient inside the laboratory?”

I never let my students forget that pairing of difficulty with results, because I never forget it. I let them know they are engaged in a sacred task that connects them to millennia of human effort encoded in their genes. If they can fight their way to the truth, the truth will make them free, just as it did for me that day in high school physics.

To engage with the world in search of any kind of Truth is an expression of the search for excellence. That, by its very nature, is desperately difficult. There will always be a price to be paid in time, sweat and tears. We should never sugarcoat that reality.

We want to teach students more than just how to get jobs, we also want to teach them how to live with depth and for purposes that stretch beyond their own immediate interests. We should never forget that connection. If we do, we are in danger of losing more than just the next generation of science majors.

In the real world of scientific investigation, she said, scientists usually rely on a model-based process rather than a hypothesis-driven one. They formulate models based on what they know from previous research and then derive testable hypotheses from those models. Data from experiments don’t validate or invalidate hypotheses as much as they feed back into the models to generate better research questions.

Where BP had swapped stock, Exxon agrees to hand over to Rosneft unspecified assets elsewhere in the world, including some that the Texas-based company owns in the deepwater zones of the Gulf of Mexico and onshore in Texas.

nvestments envisioned under the agreement could reach $500 billion, including a direct investment of $200 billion to $300 billion. It was unclear what the timeline would be or whether this included the value of asset swaps.