Risk assessment, for the birds

Every year, backyard songbirds across the United States make an arduous journey to warmer winter climes. They migrate hundreds of miles, occasionally braving tough terrain and nasty weather. Sometimes, they have no place ...

Rocket Lab says ground equipment marred New Zealand launch

A California aerospace company says a rocket it launched from New Zealand last May did not reach orbit because a problem with ground equipment caused a loss of telemetry that forced range safety officials to terminate the ...