Sure, Christmas is a religious holiday and science and religion share common people but not often common ground.   That doesn't mean we can't all join together and share some Christmas science ... and an awesome electric car (5 MPH!) I assembled for my youngest kids last night (picture to come later).    Like Rock'em Sock'em Robots, even adults think miniature cars are cool.   If you're the environmental type, I am basically teaching my kids to like a Prius - and it goes about as fast.  So thank me by reading some of the terrific science below:

The climate is changing and the natural world has to adapt to it. But how much time do the multitudes of species and their habitats have before it's too late? A team of environmental researchers has set out to answer that very question, and they say that as the world warms through the 21st century, ecosystems will need to shift about 0.42 kilometers per year (about a quarter mile per year) to keep pace with changing temperatures across the globe.

Many illusions are like spherically curved space. Below on the left (fig. 1 ) is a geometrical illusion, and on the right is a ball with some great arcs drawn on it.

Notice the similarities: the distortions in the illusion are qualitatively similar to the non-Euclidean nature of the contours on the ball.

Why? Is there something in perception that’s like curved space?

figure 1

According to a 2007 press release by the Consumer Product Safety Commission, every year 33.1 million people are injured by consumer products in the home. No one is safe and constant vigilance is required to avoid maiming and/or death (paraphrased). Here are the prime offenders:

1. Magnets: If a child eats your wedding ring, it will pass. If the same child eats both your wedding ring and a magnet, the two might attract through intestinal walls, creating a massive kink and making it very difficult to retrieve your ring.

2. Recalled Products: At cspc.gov, you can sign up for e-mail notification of recalled goods. With about 400 recalls a year, you can rest assured that your in-box will be a constant source of terror.