Adrian G. Dyer: 2 ideas worth knowing

2 ideas from Adrian G. Dyer, each explained in a minute and credited to the original work. Free on Savvy.

Honeybees can rank zero as a number, not just recognise 'nothing'
Trained to always pick the image with fewer dots, honeybees offered a real choice against a blank card chose the blank — placing zero below one on a number line, something previous…
— Scarlett R. Howard, Aurore Avarguès-Weber, Jair E. Garcia, Andrew D. Greentree and Adrian G. Dyer, Numerical Ordering of Zero in Honey Bees
Honeybees can learn to recognize individual human faces
Despite having a brain the size of a grass seed, honeybees trained with a sugar reward can pick out one specific human face from a lineup of photos, and even generalize the skill t…
— Adrian G. Dyer, Christa Neumeyer & Lars Chittka, Honey bee

Five ideas worth knowing, every week