2 min read · May 13th · All pandemic long, scientists brawled over how the virus spreads. Droplets! No, aerosols! At the heart of the fight was a mysterious error in decades-old research.
Reality is far messier, with particles much larger than 5 microns staying afloat and behaving like aerosols, depending on heat, humidity, and airspeed. “I’d see the wrong number over and over again, and I just found that disturbing,” she says. The error meant that the medical community had a distorted picture of how people might get sick.
They plucked the size of the particle that transmits tuberculosis out of context, making 5 microns stand in for a general definition of airborne spread. Wells’ 100-micron threshold got left behind.
5 min read · 2020-10-30 · Unless you’re a physicist or an engineer, there really isn’t much reason for you to know about partial differential equations. I know. After years of poring over them in undergrad while studying…
8 min read · Aug 9th · Here's what the new IPCC report says, and what it doesn't, about the most important moment of our lives.
these statements, taken together, are the clearest statement of how dire the climate emergency has become, and the clearest call to action we’ve ever received on the existential crisis of our time.
Every single sentence of the summary report has been unanimously approved by representatives from every country on Earth. That makes this report a political document, one of the most important in history
Unless there are immediate, rapid and large-scale reductions in greenhouse gas emissions, limiting warming to close to 1.5°C or even 2°C will be beyond reach.