FROM his morphological investigation of the black bean aphid, Aphis fabae Scop., Weber 1 concluded that the stylets do not contain nerves, and he showed the central mandibular duct to be empty.

Researchers from the Department of Molecular Physics at the Fritz Haber Institute have demonstrated the first magneto-optical ...

Superconductivity occurs when electrons pair up, rather than scattering apart as they do in normal conductors or in everyday ...