Columns of dust are a natural phenomenon, part of the Earth’s nutrient cycle. They occur when high-speed winds pick up small dry particles from the Earth’s surface and transport them over long distances. Every summer, columns of dust from the Sahara desert in Africa cross the Atlantic Ocean. They are …
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Scientists have identified an almost complete skeleton of a 4.8-meter-long dolphin ancestor that lived in what is now South Carolina during the Oligocene epoch about 25 million years ago. This ‘dolphin’ was the first known echolocation apex predator: in addition to its large size, it would have had large, tusk-like …
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A new guide from the Centers for Disease Control and Prevention estimates that 40 percent of people infected with COVID-19 are asymptomatic and the likelihood of transmission from people without symptoms is 75 percent. In an updated guide also reported by CNN, the agency expanded its “best current estimate” based …
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Finding a potentially habitable exoplanet is not as easy as you might think. Orbiting at a warm distance from the host star is only the first step. Size and composition also play a role, as does the level of flare activity in the star. And all of that doesn’t mean …
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There is a new exotic subatomic particle in the atom buster. Physicists working with the beauty collaboration of CERN’s Large Hadron Collider (LHCb) have found a new form of the elusive four quark particle called tetraquark that they have never seen before. The newly identified particle is made up of …
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