Scientist Jeffrey Barnes of Oregon State University said the dust ranges as high as 21 to 24 miles (35-40 km) into the atmosphere.
Complicating the issue is the volcanic eruption of Toba, in Sumatra, around 74, 000 years ago, which injected so much sulfurous dust into the high atmosphere that it caused prolonged droughts that might have come close to wiping out many human populations.
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In one high-profile dust-up, he has been battling with two former underlings over whether in 2008 he knew the full implications of authorizing a large, secret settlement in an early phone-hacking lawsuit.
The camera's construction helps meet the needs of professionals with a 100, 000-cycle shutter durability and EOS Integrated Cleaning System for high-quality vibration-based dust removal.
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Stardust was commanded to take more than 70 high-resolution pictures, and the dust analysis instruments investigated the environment around the comet.
You spend so much time there that dust builds up quickly and your chance of exposure is high.
Both are rated to pass the MIL-STD-810F standards, which are a suite of tests encompassing the device's ability to operate under high temperatures, low temperatures, and resist dust -- even how susceptible its circuitry is to cause an explosions in a flammable environment.
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In such a high-resolution environment even the finest morsel of dust can ruin the entire product.
They meet eight different military specification tests for high and low temperatures, vibration, altitude, dust and more.
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It meets the highest standards of resistance to dust, sand, shock, vibrations, low pressure, high and low temperature, rain and long-term moisture.
High on a hill overlooking albuquerque the light- brown dust swirls, and a steel skeleton gleams under the sun.
It can use its High Frequency Instrument to look for the infrared emission from dust that is warmed by stars associated with far-off galaxies.
Blowing dust forced the California Highway Patrol to close state Route 14 in the high desert Antelope Valley north of Los Angeles due to low visibility.
New lens elements and glass materials ensure the clearest possible imaging performance, and the proven dust and splashproof mechanism originally featured in the Four Thirds SHG (Super High Grade) series lenses is now incorporated for the first time in a Micro Four Thirds System lens.
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He may occupy the moral high ground, but most often he's the one picking himself out of the dust.
In recent years, a string of reports now gathering dust on ministerial shelves have identified the chief brakes on growth: the weight of the public sector, high taxation, a rigid labour market.
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