'Orangutan, heal thyself': First wild animal seen using medicinal plant
The Sumatran orangutan used a plant known to humans for its medicinal qualities
The Sumatran orangutan used a plant known to humans for its medicinal qualities
Andrew Robinson reviews five of the best science picks.
In ordinary materials, electrons move too quickly for their negative electric charges to affect their interactions. But at low temperatures and densities, they can be made to crystallize into an exotic type of electron solid — a phenomenon predicted by Eugene Wigner 90 years ago and only now directly observed.