A 'sentient' machine explores the difference between fluent language and fluent thought—and the consequences of confusing the two.

The wolf genomes could help settle the long-standing mystery of dog domestication.

If machines can learn as adeptly as children do, the military thinks they might be able to help out in useful ways.

Eliminating waste is crucial, but experts argue this timeline is too long.

Officials from Portland, New York, Miami and Phoenix discuss plans to keep residents safe in extreme heat.

Ecologist Kitt Heckscher discovered four new firefly species in coastal wetlands. He swears there are many more.

Google's history with messaging apps is chaotic. With Hangouts gone, here's a look at what's left.

The human health hazards of gas leaks are still relatively unknown. 

Photographer Levon Biss captures the exquisite majesty of bugs—and the pressures that threaten them.

A look at what went into creating the Cadillac Lyriq—and what it's like to drive this important new electric vehicle.