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Information about what happened during the brief and hotly contested incident. Well learn all of it tonight. Reporter on a day protesters marched to the st. Louis county Prosecutors Office building, missouris governor declared a state of emergency in preparation for whatever may come when the grand jury releases its decision on whether or not to indict officer Darren Wilson in the killing of unarmed teen Michael Brown. The st. Louis mayor welcomed the decision. I agree with the governors decision. This is why, first of all, we dont know whats going to happen or when its going to happen or what the decision is going to be or what the reaction is going to be. I think we need to make sure that we are prepared for whatever may happen. Reporter but the governors actions has angered some protesters who say their demonstratio ....
A modeling study raises questions about how far respiratory droplets, like those that transmit the virus that causes COVID-19, can travel before becoming harmless. Can the airborne particles that carry the virus remain infectious not just for a few f ....
The team analysed the mucus that coats the respiratory droplets that people spew from their lungs. Scientists know that mucus allows many viruses to travel further than they otherwise would, enabling them to journey from one person to another.
Small coronavirus respiratory particles can remain moist and airborne for a longer time and at greater distance than scientists have thought so far.Scientists at the US Department of Energy s Pacific Northwest National Laboratory estimates that . ....