Technology San Francisco birds sing differently in the pandemic
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Porter also claimed he has never received a vaccine in his life. Murray noted that the University of Missouri, where Porter played college ball, requires all students to be up to date on certain immunizations. However, there are medical and religious waivers. Porter Jr. ended his response to the question with the following: "It is a serious thing. It's a real thing but this is being overblown." — Clevis Murray (@ClevisMurray) July 29, 2020 It’s possible Porter Jr. hasn’t been vaccinated. According to the University of Missouri website, students can apply for a medical or religious waiver.
San Francisco birds started singing differently in the quiet of the coronavirus lockdown, says a study in Science.
Before, urban white-crowned sparrow's breeding territories were almost three times as loud as rural territories,found.
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But during the pandemic, researchers noted that noise levels in urban areas were drastically lower. In fact, they were consistent with traffic flow in the mid-1950s.
"In other words, the Covid-19 shutdown created a proverbial silent spring across the SF Bay Area," researchers noted.
By analyzing traffic flow data from the Golden Gate Bridge, researchers found that vehicle crossings from April to May 2020 returned to levels not seen since 1954. While noise recordings are not available from the 1950s, researchers said this indicates that a brief but dramatic change in human behavior effectively erased more than a half-century of urban noise pollution.
Birds responded by producing higher performance songs at lower amplitudes, maximizing communication distance and salience.
"We found that birds sang more softly when noise levels were lower and at shorter recording distances before and during the shutdown," researchers said in the study.
Even though the birds were singing more softly, the study found that communication distance nearly doubled, elevating species fitness and increasing mating potential.
"In addition, the signal-to-noise ratio doubled in relative energy, which helps explain media reports suggesting that bird songs sounded louder during the shutdown," the researchers said.
Additional Marlins player tests positive for COVID-19 .
Another Marlins player has tested positive for COVID-19 infection. His identity is not known at this time. © Aaron Doster-USA TODAY Sports Another Marlins player has tested positive for COVID-19 infection. His ident It’s not altogether surprising to see additional positive tests arising, given the incubation period of the disease and multiple potential chains of transmission. In this case, Rosenthal says, contract tracing efforts had already identified the particular player as likely to have been exposed. That doesn’t change the gravity of the situation.