But experts concede that the figures are only broad estimates.

The process, described in the accompanying chart, appears complex, experts concede.

But military experts concede that a Korean strike would most likely involve tumbling objects.

But experts at the space agency concede that it will be difficult to adhere to the schedule.

Markets alone, most experts concede, may be insufficient to protect the planet from unacceptable environmental damage.

The experts concede that they cannot say exactly what may happen, or when.

Still, even those experts conceded that the articles raised some good points.

Sticking to a diversified portfolio while market favorites come and go can be trying, the experts conceded.

And for all the traumas of the recent past, the experts concede that there is still more pain to come.

Indeed, experts conceded, there is no way to guarantee protection for the city's sprawling subway system.