These people are not likely to believe in an alternative explanation.

A number of alternative explanations have been given for the name.

At least, now there was an alternative explanation that needed looking into.

Sure, they may be better, but it's just as likely there are alternative explanations.

Well, there's an alternative explanation - he's never said anything of the sort.

Critics have raised a few possible alternative explanations for each study.

Is that the best we could come up with on short notice as an alternative explanation?

He did not offer any alternative explanation for apparent design, but left the question open.

So he has to do a lot of work gathering evidence and looking for alternative explanations.

There are two alternative explanations for how the crash may have happened.