Nine Things You Absolutely Have to Know about Global Warming (Medium)

A picture is worth a thousand words. Among other interesting things, this article sports exactly such a picture about the issue of climate change, one which makes it visible like none other I have ever seen.

 

Betsy DeVos — The Uneducation Secretary Pick Even Republicans Recoil From

Meet Donald Trump’s nominee for secretary of education: Betsy DeVos

Qualifications: billionaire heiress, no experience with K-12 education, no experience with college financial aid or student loans. Christian fundamentalist. Long time busy trying to undermine public education through questionable school voucher programs.

As someone said, it’s like asking an Amish person to head NASA. Continue reading

Science – Why Turtles Evolved Shells: It Wasn’t for Protection | The Atlantic

For some people, evolution is strangely hard to wrap their minds around. One key difficulty may be resolved by exaptation, well explained in an article which appeared in The Atlantic. Salient quotes:

The turtle’s shell, then, is a wonderful example of exaptation—the evolutionary process where a trait evolves for one function and is then co-opted to serve another. They began as digging platforms and then became suits of armor. Feathers are another example. They now help birds to fly, but they probably originated as ways of keeping warm or signaling to mates and rivals.

“A change in a structure of the body can only provide a selective advantage based on its current abilities, not potential future ones,” says Cebra-Thomas. “That’s very important, and not just for understanding the evolution of turtles.”

Read the whole article here.