Health

Twins peek: Scott, Mark Kelly help NASA study effects of long-term space travel

WASHINGTON – Scott and Mark Kelly were identical twins when Scott went into space, but would they be identical when he came back to Earth 340 days later? NASA says yes – eventually. Long space travel does affect the body, but most changes are reversed within a few months, a study of the twins showed.

Training, change in tactics can reduce dangers to police officers handling drugs

PHOENIX – Newer and more powerful drugs like fentanyl and concerns for officer safety have complicated once routine police work, such as field testing suspected drugs. An Arizona toxicologist and some law-enforcement agencies said training makes a difference. Vertical: Government/health

Arizona cattle rancher uses science to beef up industry

SUPERSTITION MOUNTAINS – For 30 years, cattle rancher Chuck Backus used traditional methods to raise his herd in the shadow of the Superstition Mountains. Then, the former scientist turned to gene selection, artificial insemination and humane treatment to breed tastier beef for the multi-billion cattle industry.