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NASHVILLE, Tenn. - We’ve known for months about the dangers of the coronavirus spreading in crowded public places but we are now learning new information about the danger of COVID-19 spreading inside your home.The new study from Vanderbilt University Medical Center reveals how vulnerable family members can be inside a home where someone has contracted the coronavirus."What we found is COVID spreads very rapidly and very quickly inside a home," said Dr. Keipp Talbot of Vanderbilt University Medical Center.Just how fast? The study found half of all family members in a home with someone infected with COVID-19 will also get COVID-19, usually within just five days."Once it's in your house, it's very hard to keep from spreading, and you don't know who in your home will be susceptible, and they'll need to be hospitalized," Talbot said.The research adds a new dimension to public health guidelines that largely focus on social distancing outside your home -- guidelines that doctors say work if everyone in the home follows those guidelines while outside."However, if you or anyone in the family goes outside the bubble, and does anything that's risky -- large groups, bars, not wearing your mask -- they can come back into that bubble and put everyone in that bubble at risk," Talbot said.This story was first reported by Jason Lamb at WTVF in Nashville, Tennessee. 1379
NASA has long been able to check out Mars on the ground with rovers and landers and from far above with orbital spacecraft. Now, it wants to prove that it can sustainably fly around the planet's thin atmosphere at low altitude -- with a tiny helicopter.NASA announced Friday it will send the Mars Helicopter to the Red Planet with the previously announced Mars 2020 rover, set to launch in two years from Florida.The hope is that aircraft like this one -- flying mechanical scouts -- will eventually give scientists another vantage point from which to observe Mars.The helicopter will be mankind's first attempt to fly a heavier-than-air craft -- think helicopter or airplane -- in an atmosphere other than Earth's, the space agency said.Its mission will be to take five test flights after it lands with the rover in February 2021. 839

More than a million chainsaws from Harbor Freight Tools are being recalled because the power switch can malfunction causing a serious injury hazard. According to the Consumer Product Safety Commission, even after the power switch is moved to the "off" position the chainsaws can continue to operate.Harbor Freight Tools has received 15 reports of chainsaws continuing to operate after being turned, resulting in three laceration injuries — including one serious injury to the arm requiring stitches.The recall includes two models of 14-inch chainsaws sold under three different brand names: 623
NASHVILLE, Tenn. - We’ve known for months about the dangers of the coronavirus spreading in crowded public places but we are now learning new information about the danger of COVID-19 spreading inside your home.The new study from Vanderbilt University Medical Center reveals how vulnerable family members can be inside a home where someone has contracted the coronavirus."What we found is COVID spreads very rapidly and very quickly inside a home," said Dr. Keipp Talbot of Vanderbilt University Medical Center.Just how fast? The study found half of all family members in a home with someone infected with COVID-19 will also get COVID-19, usually within just five days."Once it's in your house, it's very hard to keep from spreading, and you don't know who in your home will be susceptible, and they'll need to be hospitalized," Talbot said.The research adds a new dimension to public health guidelines that largely focus on social distancing outside your home -- guidelines that doctors say work if everyone in the home follows those guidelines while outside."However, if you or anyone in the family goes outside the bubble, and does anything that's risky -- large groups, bars, not wearing your mask -- they can come back into that bubble and put everyone in that bubble at risk," Talbot said.This story was first reported by Jason Lamb at WTVF in Nashville, Tennessee. 1379
NASA has long been able to check out Mars on the ground with rovers and landers and from far above with orbital spacecraft. Now, it wants to prove that it can sustainably fly around the planet's thin atmosphere at low altitude -- with a tiny helicopter.NASA announced Friday it will send the Mars Helicopter to the Red Planet with the previously announced Mars 2020 rover, set to launch in two years from Florida.The hope is that aircraft like this one -- flying mechanical scouts -- will eventually give scientists another vantage point from which to observe Mars.The helicopter will be mankind's first attempt to fly a heavier-than-air craft -- think helicopter or airplane -- in an atmosphere other than Earth's, the space agency said.Its mission will be to take five test flights after it lands with the rover in February 2021. 839
来源:资阳报