A ton of stuff goes on sale on Prime Day, but not every deal is actually a deal. Lifehacker editors are hunting through them ...

America's largest power grid struggles to meet demand amid a tech industry power grab—but that's not the only issue.

US stocks mostly fell on Friday after President Donald Trump threatened a 35% tariff on Canada — a sharp escalation in an ongoing trade war. The Dow was lower by 226 points, or 0.5%. The broader S&P ...