The other day I was tying to make some multi-set Venn diagrams with polar symmetry, which it turns out is harder than you'd think and has ties with prime number theory. It's an obscure but important area of combinatorics. Everybody knows a 3-set one (n=3), and I made a 5-set one with ellipses (pictured to the right). After that, I was stumped. That led me to a great web section maintained by Professors Frank Ruskey and Mark Weston. The Dwarf diagram at the top is based on that work, with Sleepy a little more opaque so you can see the shape. Ruskey and Weston display lots of lovely diagrams, including the elusive n=7 minimum vertex Venn diagram and the remarkable n=11 Venn diagram.
On Thursday May 26, Red Nose Day will return for the second year. It's all about giving to children to fight hunger, sickness, and homelessness. In the video above, the most famous magician in the world, David Copperfield, has his own magical way of asking you to get involved. There's going to be a two-hour TV show on… READ THE REST
Facebook gets a bad rap, but where I live, it has brought neighbors together, and it started because of the things I didn't want to share. READ THE REST
When the Congressional Science committee wants to talk about the cold weather, and when NASA has to defend their budget by explaining why NASA is important, it can make people who believe in facts… a bit tense. READ THE REST
Even with today's massive array of innovative gizmos and gadgets at your disposal, getting your hands on professional-grade tech for your home can be a little tricky, not to mention quite expensive. And if you've ever searched for quality audio tools for your home studio, you likely have experienced this frustration. Whether you write and record your own… READ THE REST
Did you know that 70% of the oxygen we breathe comes from the ocean, specifically tiny plant-like plankton called Pyrocystis? Well, what if you can grow those tiny Pyrocystis in your own home and enjoy the benefits? Now, that's a possibility, thanks to PyroFarms. For several years, the citizen scientists at PyroFarms have been growing dinoflagellates Pyrocystis. Their mission is to "bring nature's natural wonder, beauty,… READ THE REST
Let's face it: Life is pretty expensive. And while we enjoy splurging on luxury goods, everyday necessities really shouldn't be breaking the bank. That's why memberships to retail warehouses are such a lifesaver. Suddenly, groceries, home goods, furniture, and more are all accessible and inexpensive. One of the best examples of this is Sam's Club — and right now,… READ THE REST