1.   Adjustments to expose all three to more sunlight could produce more power for the outpost, U.S. experts estimate.

2.   It has already cost millions of dollars in lost productivity, experts estimate.

3.   The result, some medical experts estimate, is that half of all surgical operations and other medical procedures remain without strict scientific evidence of their efficacy and safety.

4.   Experts estimate that a quarter or more of those affected may have symptoms severe enough to interfere with everyday life months and even years later.

5.   Experts estimate that every year, about one in a thousand people is diagnosed with blood clots in leg veins.

6.   Japanese experts estimate that they transfer around one billion dollars a year back to North Korea.

7.   Some experts estimate HP has already spent one billion dollars on developing its chip architecture so far.