We prove that it is NP-hard to properly PAC learn decision trees with queries, resolving a longstanding open problem in learning theory (Bshouty 1993; Guijarro–Lavín–Raghavan 1999; Mehta–Raghavan 2002 ...

James Canton spent two years sitting beneath an 800-year-old oak tree near his home in Essex, watching acorns fatten and ...

The felling has prompted calls for stricter legal protections for other trees and drawn attention to wider issues ...

So I sat down with Cassie Kozyrkov, the founder and CEO of AI consultancy Kozyr. She’s also the former chief decision scientist at Google. Listen to Decoder, a show hosted by The Verge’s Nilay Patel ...