Global warming is getting a little scary, as its consequences emerge more quickly than most scientists had expected, in soaring global temperatures, unprecedented wildfires and many other effects. This year is on target to be the fourth hottest ever, only just behind the three previous years…

No computer has yet shown features of true human-level artificial intelligence much less conscious awareness. Some experts think we won't see it for a long time to come. And yet academics, ethicists, developers and policy-makers are already thinking a lot about the day when computers become…

Some scientists think that humans can’t handle the truth about the damage they are doing to the environment -- that findings must be sugar-coated lest people lose the hope needed to act. They should listen to psychologists and stop holding back. Earlier this year, the journalist David Wallace…