According to the company Apis Cor, the body of this 409 square foot house was built in 24 hours by a 3D printer in Russia. And they are not the only company experimenting with 3D printed homes.

Small-town America relies on a program that attracts foreign physicians to underserved areas. A recent federal change, however, could delay newcomers.

Travelers in Istanbul, Turkey flying to the U.S. or the U.K. have started having to check large electronics.

Among Dr. Weinberg’s books were “Society and the Healthy Homosexual,” which rejected the prevalent idea that homosexuality was a psychological disorder.

Dental problems are epidemic among older people. Experts are scrambling to address them in a variety of ways.

Dr. Rowland, who had a special interest in A.L.S., or Lou Gehrig’s disease, refused to be interrogated by investigators in the McCarthy era.