But even the scientists themselves acknowledge that they have found no final proof.

So scientists acknowledge that proving their overfishing theory will take hard work.

These criticisms are certainly valid, and scientists acknowledge that there is much we haven't been able to study or measure effectively.

And even scientists involved in the development of visual recognition software acknowledge that the programs do not work well enough yet.

Another reason for the increasing numbers of stranded creatures could be climate change, the scientists acknowledge.

Many scientists acknowledge that in some circumstances a nuclear weapon may be the only option.

The German scientists acknowledge that some of their results are equivocal.

The forensic scientists at the laboratory acknowledge that they have their work cut out for them.

However, many of its close relatives did, and scientists acknowledge the possibility.

Chinese scientists acknowledge that they bought life support systems from Russia.