End of an era: Last space shuttle comes home.
Applause, but no tears in Mission Control at end.
iFraud: Entire Apple stores being faked in China.
Hot nights can compound danger from heat waves.
Heat and humidity conspire for discomfort, danger.
Living-long paper withdrawn after data questioned.
Teaching evolution up for debate again in Texas.
Future of spaceflight? NASA is outsourcing the job.
Lack of sperm coating plays role in infertility.
New but tiny moon found circling distant Pluto.