A collection of sf stories by Nancy Kress. Usually collections are an uneven mix, but these stories not only flow together well, but each and every story is excellent. Many of the stories are about individual humans' reactions to technological leaps or apocalyptic events. Aliens appear in a few. And yet they are all believable, like what might actually, truly happen if these events come to pass. Kress has a solid scientific understanding and avid curiosity and imagination about future breakthroughs, and it makes her tales all the better.