One of the simplest “green” lifestyle changes is to give up buying bottled water. Americans used 50 million single-use water bottles last year, and we have dismal national recycling rate of only 23%. Cutting them out of your life and budget makes good economic and environmental sense, and many bottled waters are actually tap water in a fancy package and nothing more. So is there really a difference between bottled and tap water- a difference you can actually taste?
Pi may be the most commonly used, well-known and popular irrational number and mathematical constant, famous for its usefulness in geometry and its infinite series of decimal numbers. In the ancient world, an exact computation of pi went to between 5 and 7 digits, but with the help of supercomputers, pi has currently been computed to over 13 trillion digits.
Every year March 14 is celebrated as Pi Day, as the first 3 digits are 3.14. But this year’s Pi Day is very special, because this Saturday, Pi Day will represent the first four digits, 3.1415! And at 9:26:53 precisely on Saturday morning, we will experience the calendar equivalent of 10 digits of pi! This special Extra-Pi Day happens only once a century, so chew on that while you’re chewing on some kind of delicious pie. On Ultimate Pi Day.
Happy 270th birthday to Italian physicist Alessandro Giuseppe Antonio Anastasio Volta, Italian physicist and inventor of the first chemical-electric battery, known as “the Voltaic pile”. And now you also know where the word “voltaic”, as in “photovoltaic” which means “electricity from light”.
Napoleon Bonaparte was a fan, and Volta was invited by the Emperor to demonstrate the battery at the Institute of France.
STEM (science, technology, engineering and math) skills are more important than ever in today’s contemporary world of tech, but women and minority populations are still grievously underrepresented in these fields. But for hundreds of years now. African Americans have been making incredible contributions as inventors, scientists and engineers.
So do you recognize the scientist in the picture?
Are you a K-12 teacher currently teaching in the US or Canada? Have you always wanted to visit places like Greenland, the Galapagos Islands, or even Antarctica? National Geographic is offering professional development opportunities just for you.