‘Insect-eye’ compass can navigate by the sun even on a cloudy day

By mimicking how some insects can use polarised light to navigate, a light-detecting compass can tell where magnetic north is even if clouds are covering the sun

​By mimicking how some insects can use polarised light to navigate, a light-detecting compass can tell where magnetic north is even if clouds are covering the sun By mimicking how some insects can use polarised light to navigate, a light-detecting compass can tell where magnetic north is even if clouds are covering the sun