Science

Journalism may not be the right word for this. It's a kind of reporting. What you see here is true, and carefully edited.

It's not art, though the images are sharp and concentrated.

It's more than advertising, (though that's its purpose) because it is telling you something abstract and true about the world, like a lesson.

It's not education. It's too sassy, too clever. Too beautiful.

A few months ago on Radiolab, we did an hour on color, which included a segment on rainbow watching. We imagined a man, a dog, a sparrow and a butterfly all gazing at the same rainbow and we asked: How many colors does each see?

Dogs See Bleaker Rainbows

The man whose research led to the world's first test-tube baby more than three decades ago, has died at age 87.

Robert Edwards, who later won the Nobel Prize, began experimenting with in vitro fertilization, or IVF, in the late 1960s. His work, controversial at the time, eventually led to the birth of the world's first "test tube baby," Louise Brown, on July 25, 1978.

Since then, IVF has resulted in about 5 million babies worldwide, according to the European Society for Human Reproduction and Embryology.