Category: Science & Health

Study: Vaping helps smokers quit. Sort of.

Smoking is the leading preventable cause of death in the US, and vaping companies have long claimed their e-cigarettes can help smokers quit. But what do we really know about how well they work? The short answer: Not much. Until now, there were only two randomized control trials — considered the gold standard of scientific […]

The limits of ancestry DNA tests, explained

Identical twins have virtually identical DNA. So you’d think if a set of twins both sent in a DNA sample for genetic ancestry testing, they’d get the exact same results, right? Not necessarily, according to a recent investigation by the Canadian Broadcasting Corporation. In fact, the journalists demonstrated that twins don’t often get the same […]

Yes, artificial intelligence can be racist

Open up the photo app on your phone and search “dog,” and all the pictures you have of dogs will come up. This was no easy feat. Your phone knows what a dog “looks” like. This modern-day marvel is the result of machine learning, a form of artificial intelligence. Programs like this comb through millions […]