Evidence that Uber, Lyft reduce car ownership

In areas where Uber, Lyft and other on-demand ride services operate, consumers may buy fewer cars and even take fewer trips, according to a new study.

SpaceX's first recycled Dragon arrives at space station

SpaceX's first-ever recycled spaceship arrived Monday at the International Space Station, two days after the unmanned Dragon cargo capsule launched atop a Falcon 9 rocket from Cape Canaveral, Florida.

Human cloning with Chinese characteristics

Chinese genetic scientists must not be put off sensitive research by ethical concerns, the team behind a controversial study on modified human embryos said Wednesday as debate erupted over the paper.

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