Share this on WhatsApp What does SARS-CoV-2, the virus that causes COVID-19, look like? This simple question does not have a simple answer. SARS-CoV-2 is very small, and seeing it requires specialized scientific techniques. Electron microscopy (EM) can reveal its general size and shape. We can see that the virions are spherical or ellipsoidal, with […]
Share this on WhatsApp Had everything gone to plan, NASA’s third mission to land astronauts on the moon would have deployed a pallet of science instruments and brought back samples from humanity’s first visit to the lunar uplands. Instead, 50 years ago this month, Apollo 13 “had a problem.” An oxygen tank that had been […]
Share this on WhatsApp In better times, the U.S. has, with some humility, owned up to its failures. Commissions have investigated tragedies such as Pearl Harbor and 9 /11. Presidential blue-ribbon panels bulwarked the Social Security program in 1983 and overhauled NASA’s space shuttle program after the 1986 Challenger disaster. Three years into the COVID […]
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