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Widespread use of indoor security cameras has raised concerns about privacy in vacation rentals, hotels, public bathrooms, locker rooms and on cruise ships.

Carnegie Mellon University students built Iris, a tiny lunar rover. When the spacecraft carrying it to the moon malfunctioned, they turned their vacation house into mission control.

As artificial intelligence improves and expands its reach, expect new ways to book online, fewer snags at the airport and, possibly, more expensive tickets.