Subject: science popularizations....Can anyone recommend authors?

I miss guys like Isaac Asimov and Arthur C Clarke pretty badly.

Though I miss their fiction, that's not a big problem. I can find enough fiction to read.

What I miss badly, though, is their non-fiction writings geared toward explaining to the layman the current state of science and technology.

I know there must be people doing the same sort of writing today. But I don't know who they are or where to look for them. (though the notion of looking up "Popular Science" magazine is beginning to dawn of me writing this)

Can anyone recommend specific authors? Thanks.