Web commentary on science and tech.

Below is today's selection of the most interesting science analysis and commentary on the Web. For straight news reports, check out the news page. For Human Nature's takes on some of these topics, visit the blog. (I generally post the link first and write the blog entry later, so check back.) To add your own take, open or join a discussion thread in the Fray—and please link to the original story so others can participate intelligently in the conversation.

April 18

Book for kids explains why mommy needs surgery to be "prettier"
(Jill Serjeant, Reuters)

What's so unnatural about the pregnant man?
(Gregory Kaebnick, Bioethics Forum)

Requiring permits and microchip implants to buy exotic animals
(Joel Achenbach, Washington Post)

Do brain-controlled military weapons erase the moral line between thoughts and lethal acts?
(Stephen White, Cornell International Law Journal)

School metal detectors are for urban kids only
(Daniel de Vise, Washington Post)

April 17

"Women with cancer genes 'should have breasts removed'"
(Ben Farmer, Telegraph)