Cancer cells 'remove blindfold' to spread

Cancer cells spread by switching on and off abilities to sense their surroundings, move, hide and grow new tumors, a new study has found.

For Singapore penguins, shuttered zoo is flippin' fun

One cute group is making the most of Singapore's partial virus lockdown—penguins at the city-state's zoo, who are being given the run of the empty complex and revelling in the chance to do some exploring.