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The Drake Equation | Posted in Earth and Space Science

The Drake equation is not directly used by scientists in their research. Rather it is often used when talking about life in the universe to non-scientists, such as in astrobiology courses, as James mentioned. One of the keynote addresses I sometimes deliver is on astrobiology, and I discuss the Drake equation quite a lot, as it relates to many fascinating topics regarding the development of life in the universe, where we would expect to find life, and how common we might expect life to be.

The purpose of the Drake equation is not to give a precise answer to that fundamental question -- How many technological civilizations are in our galaxy? -- but to form the basis of discussions by presenting various types of information that we would need to know, if we wanted to answer that question.

So basically the Drake equation is a statement that "stimulates intellectual curiosity about the universe around us, for helping us to understand that life as we know it is the end product of a natural, cosmic evolution, and for helping us realize how much we are a part of that universe." (

What the equation and the search for life has done is focus science on some of the issues concerning life in the universe, specifically the development of life starting with chemical processes, the development of multi-cellular life, and the development of intelligence.


Matthew Bobrowsky

Science Trips | Posted in Informal Science

We studied habitats and what animals eat. We have a place here locally called Bear Country USA. We took a tour of the facility and then the nutritionist for the animals came and showed us how they prepare the meals for the bears and other animals. There was actually a Scholastic News article about how meals are prepared at zoos or animal sanctuaries. It was perfect timing with our field trip. If you have a local zoo or animal rescue place you can ask if you can take a field trip and talk about nutrition of animals .

Brenda Velasco

Weather and Elementary | Posted in Early Childhood

I really enjoyed reading all of the replies to this question. I agree with many others about taking the students outside for them to witness the daily weather themselves. I think if you talk about weather every day in your classroom then relate that to the four seasons it will help the students. Thanks for all of the advice!

Anna Jamboretz

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